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h=sqrt(a^2-2*a*b+b^2-((a+b)/2)) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
        _________________________
       /  2            2   a + b 
h =   /  a  - 2*a*b + b  - ----- 
    \/                       2   
$$h = \sqrt{- \frac{a + b}{2} + \left(b^{2} + \left(a^{2} - 2 a b\right)\right)}$$
Solución detallada
Tenemos la ecuación:
$$h = \sqrt{- \frac{a + b}{2} + \left(b^{2} + \left(a^{2} - 2 a b\right)\right)}$$
cambiamos:
$$h = \frac{\sqrt{4 a^{2} - 8 a b - 2 a + 4 b^{2} - 2 b}}{2}$$
Abrimos los paréntesis en el miembro derecho de la ecuación
h = sqrt-2*a/2+2*b/2+4*a/2+2/2+4*b/2+2/2+8*a*b/2

Sumamos los términos semejantes en el miembro derecho de la ecuación:
h = sqrt(-2*a - 2*b + 4*a^2 + 4*b^2 - 8*a*b)/2

Obtenemos la respuesta: h = sqrt(-2*a - 2*b + 4*a^2 + 4*b^2 - 8*a*b)/2
Gráfica
Respuesta rápida [src]
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     4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|     4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|
     \/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *cos|-------------------------------------------------------------------------------------------------------------------------------------------------|   I*\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *sin|-------------------------------------------------------------------------------------------------------------------------------------------------|
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h1 = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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$$h_{1} = \frac{i \sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2} + \frac{\sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2}$$
h1 = i*((8*re(a)*im(a) + 8*re(b)*im(b) - 2*im(a) - 2*im(b) - 8*im(a*b))^2 + (4*re(a)^2 - 2*re(a) + 4*re(b)^2 - 2*re(b) - 8*re(a*b) - 4*im(a)^2 - 4*im(b)^2)^2)^(1/4)*sin(atan2(8*re(a)*im(a) + 8*re(b)*im(b) - 2*im(a) - 2*im(b) - 8*im(a*b, 4*re(a)^2 - 2*re(a) + 4*re(b)^2 - 2*re(b) - 8*re(a*b) - 4*im(a)^2 - 4*im(b)^2)/2)/2 + ((8*re(a)*im(a) + 8*re(b)*im(b) - 2*im(a) - 2*im(b) - 8*im(a*b))^2 + (4*re(a)^2 - 2*re(a) + 4*re(b)^2 - 2*re(b) - 8*re(a*b) - 4*im(a)^2 - 4*im(b)^2)^2)^(1/4)*cos(atan2(8*re(a)*im(a) + 8*re(b)*im(b) - 2*im(a) - 2*im(b) - 8*im(a*b), 4*re(a)^2 - 2*re(a) + 4*re(b)^2 - 2*re(b) - 8*re(a*b) - 4*im(a)^2 - 4*im(b)^2)/2)/2)
Suma y producto de raíces [src]
suma
    ___________________________________________________________________________________________________________________________________________________                                                                                                                                                                ___________________________________________________________________________________________________________________________________________________                                                                                                                                                       
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4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|     4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|
\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *cos|-------------------------------------------------------------------------------------------------------------------------------------------------|   I*\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *sin|-------------------------------------------------------------------------------------------------------------------------------------------------|
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                      2                                                                                                                                                                                                                                                                                                                 2                                                                                                                                                        
$$\frac{i \sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2} + \frac{\sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2}$$
=
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4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|     4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|
\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *cos|-------------------------------------------------------------------------------------------------------------------------------------------------|   I*\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *sin|-------------------------------------------------------------------------------------------------------------------------------------------------|
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                      2                                                                                                                                                                                                                                                                                                                 2                                                                                                                                                        
$$\frac{i \sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2} + \frac{\sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2}$$
producto
    ___________________________________________________________________________________________________________________________________________________                                                                                                                                                                ___________________________________________________________________________________________________________________________________________________                                                                                                                                                       
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4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|     4 /                                                                  2   /                 2          2                              2          2   \      |atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/|
\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *cos|-------------------------------------------------------------------------------------------------------------------------------------------------|   I*\/   (-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b))  + \-8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/  *sin|-------------------------------------------------------------------------------------------------------------------------------------------------|
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                      2                                                                                                                                                                                                                                                                                                                 2                                                                                                                                                        
$$\frac{i \sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2} + \frac{\sqrt[4]{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2} \right)}}{2}$$
=
                                                                                                                                                              /                                                                                 2          2                              2          2   \
          ___________________________________________________________________________________________________________________________________________  I*atan2\-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im (a) - 4*im (b) - 2*re(a) - 2*re(b) + 4*re (a) + 4*re (b)/
         /                                                                                                                                         2   ---------------------------------------------------------------------------------------------------------------------------------------------------
  ___ 4 /                                                             2   /      2          2          2          2                               \                                                                             2                                                                         
\/ 2 *\/   (4*im(a*b) - 4*im(a)*re(a) - 4*im(b)*re(b) + im(a) + im(b))  + \- 2*re (a) - 2*re (b) + 2*im (a) + 2*im (b) + 4*re(a*b) + re(a) + re(b)/  *e                                                                                                                                                   
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$$\frac{\sqrt{2} \sqrt[4]{\left(- 4 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} - 4 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} + \operatorname{im}{\left(a\right)} + \operatorname{im}{\left(b\right)} + 4 \operatorname{im}{\left(a b\right)}\right)^{2} + \left(- 2 \left(\operatorname{re}{\left(a\right)}\right)^{2} + \operatorname{re}{\left(a\right)} - 2 \left(\operatorname{re}{\left(b\right)}\right)^{2} + \operatorname{re}{\left(b\right)} + 4 \operatorname{re}{\left(a b\right)} + 2 \left(\operatorname{im}{\left(a\right)}\right)^{2} + 2 \left(\operatorname{im}{\left(b\right)}\right)^{2}\right)^{2}} e^{\frac{i \operatorname{atan_{2}}{\left(8 \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + 8 \operatorname{re}{\left(b\right)} \operatorname{im}{\left(b\right)} - 2 \operatorname{im}{\left(a\right)} - 2 \operatorname{im}{\left(b\right)} - 8 \operatorname{im}{\left(a b\right)},4 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 2 \operatorname{re}{\left(a\right)} + 4 \left(\operatorname{re}{\left(b\right)}\right)^{2} - 2 \operatorname{re}{\left(b\right)} - 8 \operatorname{re}{\left(a b\right)} - 4 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 4 \left(\operatorname{im}{\left(b\right)}\right)^{2} \right)}}{2}}}{2}$$
sqrt(2)*((4*im(a*b) - 4*im(a)*re(a) - 4*im(b)*re(b) + im(a) + im(b))^2 + (-2*re(a)^2 - 2*re(b)^2 + 2*im(a)^2 + 2*im(b)^2 + 4*re(a*b) + re(a) + re(b))^2)^(1/4)*exp(i*atan2(-8*im(a*b) - 2*im(a) - 2*im(b) + 8*im(a)*re(a) + 8*im(b)*re(b), -8*re(a*b) - 4*im(a)^2 - 4*im(b)^2 - 2*re(a) - 2*re(b) + 4*re(a)^2 + 4*re(b)^2)/2)/2