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(x-4)*(x^2-16x+64)=13*(x+8) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
        / 2            \             
(x - 4)*\x  - 16*x + 64/ = 13*(x + 8)
$$\left(x - 4\right) \left(\left(x^{2} - 16 x\right) + 64\right) = 13 \left(x + 8\right)$$
Gráfica
Suma y producto de raíces [src]
suma
                                        ___________________     /             ___________________                              \                                           ___________________     /           ___________________                              \                                                             
                                       /            ______      |            /            ______                               |                                          /            ______      |          /            ______                               |                                                             
                                      /  2510   5*\/ 3029       |    ___    /  2510   5*\/ 3029                                |                                         /  2510   5*\/ 3029       |  ___    /  2510   5*\/ 3029                                |             ___________________                             
                                   3 /   ---- + ----------      |  \/ 3 *3 /   ---- + ----------                   ___         |                                      3 /   ---- + ----------      |\/ 3 *3 /   ---- + ----------                   ___         |            /            ______                              
20                55               \/     27        3           |        \/     27        3                   55*\/ 3          |   20                55               \/     27        3           |      \/     27        3                   55*\/ 3          |   20      /  2510   5*\/ 3029                 55            
-- - --------------------------- - ------------------------ + I*|- ------------------------------ + ---------------------------| + -- - --------------------------- - ------------------------ + I*|------------------------------ - ---------------------------| + -- + 3 /   ---- + ----------  + --------------------------
3            ___________________              2                 |                2                          ___________________|   3            ___________________              2                 |              2                          ___________________|   3    \/     27        3                ___________________
            /            ______                                 |                                          /            ______ |               /            ______                                 |                                        /            ______ |                                         /            ______ 
           /  2510   5*\/ 3029                                  |                                         /  2510   5*\/ 3029  |              /  2510   5*\/ 3029                                  |                                       /  2510   5*\/ 3029  |                                        /  2510   5*\/ 3029  
     18*3 /   ---- + ----------                                 |                                   18*3 /   ---- + ---------- |        18*3 /   ---- + ----------                                 |                                 18*3 /   ---- + ---------- |                                   9*3 /   ---- + ---------- 
        \/     27        3                                      \                                      \/     27        3      /           \/     27        3                                      \                                    \/     27        3      /                                     \/     27        3      
$$\left(\frac{55}{9 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}} + \frac{20}{3}\right) + \left(\left(- \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} + \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}\right)\right) + \left(- \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2}\right)\right)\right)$$
=
       /           ___________________                              \     /             ___________________                              \
       |          /            ______                               |     |            /            ______                               |
       |  ___    /  2510   5*\/ 3029                                |     |    ___    /  2510   5*\/ 3029                                |
       |\/ 3 *3 /   ---- + ----------                   ___         |     |  \/ 3 *3 /   ---- + ----------                   ___         |
       |      \/     27        3                   55*\/ 3          |     |        \/     27        3                   55*\/ 3          |
20 + I*|------------------------------ - ---------------------------| + I*|- ------------------------------ + ---------------------------|
       |              2                          ___________________|     |                2                          ___________________|
       |                                        /            ______ |     |                                          /            ______ |
       |                                       /  2510   5*\/ 3029  |     |                                         /  2510   5*\/ 3029  |
       |                                 18*3 /   ---- + ---------- |     |                                   18*3 /   ---- + ---------- |
       \                                    \/     27        3      /     \                                      \/     27        3      /
$$20 + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} + \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}\right) + i \left(- \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2}\right)$$
producto
/                                        ___________________     /             ___________________                              \\ /                                        ___________________     /           ___________________                              \\                                                             
|                                       /            ______      |            /            ______                               || |                                       /            ______      |          /            ______                               ||                                                             
|                                      /  2510   5*\/ 3029       |    ___    /  2510   5*\/ 3029                                || |                                      /  2510   5*\/ 3029       |  ___    /  2510   5*\/ 3029                                || /          ___________________                             \
|                                   3 /   ---- + ----------      |  \/ 3 *3 /   ---- + ----------                   ___         || |                                   3 /   ---- + ----------      |\/ 3 *3 /   ---- + ----------                   ___         || |         /            ______                              |
|20                55               \/     27        3           |        \/     27        3                   55*\/ 3          || |20                55               \/     27        3           |      \/     27        3                   55*\/ 3          || |20      /  2510   5*\/ 3029                 55            |
|-- - --------------------------- - ------------------------ + I*|- ------------------------------ + ---------------------------||*|-- - --------------------------- - ------------------------ + I*|------------------------------ - ---------------------------||*|-- + 3 /   ---- + ----------  + --------------------------|
|3            ___________________              2                 |                2                          ___________________|| |3            ___________________              2                 |              2                          ___________________|| |3    \/     27        3                ___________________|
|            /            ______                                 |                                          /            ______ || |            /            ______                                 |                                        /            ______ || |                                      /            ______ |
|           /  2510   5*\/ 3029                                  |                                         /  2510   5*\/ 3029  || |           /  2510   5*\/ 3029                                  |                                       /  2510   5*\/ 3029  || |                                     /  2510   5*\/ 3029  |
|     18*3 /   ---- + ----------                                 |                                   18*3 /   ---- + ---------- || |     18*3 /   ---- + ----------                                 |                                 18*3 /   ---- + ---------- || |                                9*3 /   ---- + ---------- |
\        \/     27        3                                      \                                      \/     27        3      // \        \/     27        3                                      \                                    \/     27        3      // \                                  \/     27        3      /
$$\left(- \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2}\right)\right) \left(- \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} + \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}\right)\right) \left(\frac{55}{9 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}} + \frac{20}{3}\right)$$
=
360
$$360$$
360
Respuesta rápida [src]
                                             ___________________     /             ___________________                              \
                                            /            ______      |            /            ______                               |
                                           /  2510   5*\/ 3029       |    ___    /  2510   5*\/ 3029                                |
                                        3 /   ---- + ----------      |  \/ 3 *3 /   ---- + ----------                   ___         |
     20                55               \/     27        3           |        \/     27        3                   55*\/ 3          |
x1 = -- - --------------------------- - ------------------------ + I*|- ------------------------------ + ---------------------------|
     3            ___________________              2                 |                2                          ___________________|
                 /            ______                                 |                                          /            ______ |
                /  2510   5*\/ 3029                                  |                                         /  2510   5*\/ 3029  |
          18*3 /   ---- + ----------                                 |                                   18*3 /   ---- + ---------- |
             \/     27        3                                      \                                      \/     27        3      /
$$x_{1} = - \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} + \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}\right)$$
                                             ___________________     /           ___________________                              \
                                            /            ______      |          /            ______                               |
                                           /  2510   5*\/ 3029       |  ___    /  2510   5*\/ 3029                                |
                                        3 /   ---- + ----------      |\/ 3 *3 /   ---- + ----------                   ___         |
     20                55               \/     27        3           |      \/     27        3                   55*\/ 3          |
x2 = -- - --------------------------- - ------------------------ + I*|------------------------------ - ---------------------------|
     3            ___________________              2                 |              2                          ___________________|
                 /            ______                                 |                                        /            ______ |
                /  2510   5*\/ 3029                                  |                                       /  2510   5*\/ 3029  |
          18*3 /   ---- + ----------                                 |                                 18*3 /   ---- + ---------- |
             \/     27        3                                      \                                    \/     27        3      /
$$x_{2} = - \frac{\sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2} - \frac{55}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{20}{3} + i \left(- \frac{55 \sqrt{3}}{18 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \frac{\sqrt{3} \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}}{2}\right)$$
               ___________________                             
              /            ______                              
     20      /  2510   5*\/ 3029                 55            
x3 = -- + 3 /   ---- + ----------  + --------------------------
     3    \/     27        3                ___________________
                                           /            ______ 
                                          /  2510   5*\/ 3029  
                                     9*3 /   ---- + ---------- 
                                       \/     27        3      
$$x_{3} = \frac{55}{9 \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}}} + \sqrt[3]{\frac{5 \sqrt{3029}}{3} + \frac{2510}{27}} + \frac{20}{3}$$
x3 = 55/(9*(5*sqrt(3029)/3 + 2510/27)^(1/3)) + (5*sqrt(3029)/3 + 2510/27)^(1/3) + 20/3
Respuesta numérica [src]
x1 = 3.28269979868288 - 4.00254443541887*i
x2 = 3.28269979868288 + 4.00254443541887*i
x3 = 13.4346004026342
x3 = 13.4346004026342