Solución detallada
Tenemos la ecuación:
x*y*(y-200)+b*y*(y+300) = (x+b)*(y+300)*(y-200)
Abrimos la expresión:
x*y*(y-200)+b*y*(y+300) = -60000*b - 60000*x + b*y^2 + x*y^2 + 100*b*y + 100*x*y
Reducimos, obtenemos:
60000*b + 60000*x - 300*x*y + 200*b*y = 0
Sumamos los términos semejantes en el miembro izquierdo de la ecuación:
60000*b + 60000*x - 300*x*y + 200*b*y = 0
Move the summands with the other variables
del miembro izquierdo al derecho, obtenemos:
$$200 b y - 300 x y + 60000 x = - 60000 b$$
Dividamos ambos miembros de la ecuación en (60000*x - 300*x*y + 200*b*y)/x
x = -60000*b / ((60000*x - 300*x*y + 200*b*y)/x)
Obtenemos la respuesta: x = 2*b*(300 + y)/(3*(-200 + y))
Suma y producto de raíces
[src]
/ / b \ / b \\ / b \ / b \
|2*(300 + re(y))*im|--------| 2*im(y)*re|--------|| 2*im(y)*im|--------| 2*(300 + re(y))*re|--------|
| \-200 + y/ \-200 + y/| \-200 + y/ \-200 + y/
I*|---------------------------- + --------------------| - -------------------- + ----------------------------
\ 3 3 / 3 3
$$i \left(\frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3} + \frac{2 \operatorname{re}{\left(\frac{b}{y - 200}\right)} \operatorname{im}{\left(y\right)}}{3}\right) + \frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{re}{\left(\frac{b}{y - 200}\right)}}{3} - \frac{2 \operatorname{im}{\left(y\right)} \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3}$$
/ / b \ / b \\ / b \ / b \
|2*(300 + re(y))*im|--------| 2*im(y)*re|--------|| 2*im(y)*im|--------| 2*(300 + re(y))*re|--------|
| \-200 + y/ \-200 + y/| \-200 + y/ \-200 + y/
I*|---------------------------- + --------------------| - -------------------- + ----------------------------
\ 3 3 / 3 3
$$i \left(\frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3} + \frac{2 \operatorname{re}{\left(\frac{b}{y - 200}\right)} \operatorname{im}{\left(y\right)}}{3}\right) + \frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{re}{\left(\frac{b}{y - 200}\right)}}{3} - \frac{2 \operatorname{im}{\left(y\right)} \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3}$$
/ / b \ / b \\ / b \ / b \
|2*(300 + re(y))*im|--------| 2*im(y)*re|--------|| 2*im(y)*im|--------| 2*(300 + re(y))*re|--------|
| \-200 + y/ \-200 + y/| \-200 + y/ \-200 + y/
I*|---------------------------- + --------------------| - -------------------- + ----------------------------
\ 3 3 / 3 3
$$i \left(\frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3} + \frac{2 \operatorname{re}{\left(\frac{b}{y - 200}\right)} \operatorname{im}{\left(y\right)}}{3}\right) + \frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{re}{\left(\frac{b}{y - 200}\right)}}{3} - \frac{2 \operatorname{im}{\left(y\right)} \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3}$$
/ b \ / / b \ / b \\ / b \
2*im(y)*im|--------| 2*I*|(300 + re(y))*im|--------| + im(y)*re|--------|| 2*(300 + re(y))*re|--------|
\-200 + y/ \ \-200 + y/ \-200 + y// \-200 + y/
- -------------------- + ----------------------------------------------------- + ----------------------------
3 3 3
$$\frac{2 i \left(\left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{im}{\left(\frac{b}{y - 200}\right)} + \operatorname{re}{\left(\frac{b}{y - 200}\right)} \operatorname{im}{\left(y\right)}\right)}{3} + \frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{re}{\left(\frac{b}{y - 200}\right)}}{3} - \frac{2 \operatorname{im}{\left(y\right)} \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3}$$
-2*im(y)*im(b/(-200 + y))/3 + 2*i*((300 + re(y))*im(b/(-200 + y)) + im(y)*re(b/(-200 + y)))/3 + 2*(300 + re(y))*re(b/(-200 + y))/3
/ / b \ / b \\ / b \ / b \
|2*(300 + re(y))*im|--------| 2*im(y)*re|--------|| 2*im(y)*im|--------| 2*(300 + re(y))*re|--------|
| \-200 + y/ \-200 + y/| \-200 + y/ \-200 + y/
x1 = I*|---------------------------- + --------------------| - -------------------- + ----------------------------
\ 3 3 / 3 3
$$x_{1} = i \left(\frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3} + \frac{2 \operatorname{re}{\left(\frac{b}{y - 200}\right)} \operatorname{im}{\left(y\right)}}{3}\right) + \frac{2 \left(\operatorname{re}{\left(y\right)} + 300\right) \operatorname{re}{\left(\frac{b}{y - 200}\right)}}{3} - \frac{2 \operatorname{im}{\left(y\right)} \operatorname{im}{\left(\frac{b}{y - 200}\right)}}{3}$$
x1 = i*(2*(re(y) + 300)*im(b/(y - 200))/3 + 2*re(b/(y - 200))*im(y)/3) + 2*(re(y) + 300)*re(b/(y - 200))/3 - 2*im(y)*im(b/(y - 200))/3