El profesor se sorprenderá mucho al ver tu solución correcta😉
2 2 z = x + 2*y - 2*x*y - 10*x + 10*y + 20
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(10 + 2*y)^2 - 4 * (-1) * (-20 + z - 10*y - 2*y^2) = -80 + (10 + 2*y)^2 - 40*y - 8*y^2 + 4*z
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
/ ____________________________________________________________ \ ____________________________________________________________ | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| x1 = 5 + I*|- \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| - \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y) \ \ 2 / / \ 2 /
/ ____________________________________________________________ \ ____________________________________________________________ | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ |4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| x2 = 5 + I*|\/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| + \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y) \ \ 2 / / \ 2 /
x2 = i*(((-2*re(y)*im(y) + im(z))^2 + (-re(y)^2 + re(z) + im(y)^2 + 5)^2)^(1/4)*sin(atan2(-2*re(y)*im(y) + im(z, -re(y)^2 + re(z) + im(y)^2 + 5)/2) + im(y)) + ((-2*re(y)*im(y) + im(z))^2 + (-re(y)^2 + re(z) + im(y)^2 + 5)^2)^(1/4)*cos(atan2(-2*re(y)*im(y) + im(z), -re(y)^2 + re(z) + im(y)^2 + 5)/2) + re(y) + 5)
suma
/ ____________________________________________________________ \ ____________________________________________________________ / ____________________________________________________________ \ ____________________________________________________________ | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| |4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| 5 + I*|- \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| - \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y) + 5 + I*|\/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| + \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y) \ \ 2 / / \ 2 / \ \ 2 / / \ 2 /
=
/ ____________________________________________________________ \ / ____________________________________________________________ \ | / 2 / / 2 2 \\ | | / 2 / / 2 2 \\ | |4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 10 + 2*re(y) + I*|\/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| + I*|- \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| \ \ 2 / / \ \ 2 / /
producto
/ / ____________________________________________________________ \ ____________________________________________________________ \ / / ____________________________________________________________ \ ____________________________________________________________ \ | | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | | | / 2 / / 2 2 \\ | / 2 / / 2 2 \\ | | | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | | |4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | 4 / 2 / 2 2 \ |atan2\-2*im(y)*re(y) + im(z), 5 + im (y) - re (y) + re(z)/| | |5 + I*|- \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| - \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y)|*|5 + I*|\/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *sin|----------------------------------------------------------| + im(y)| + \/ (-2*im(y)*re(y) + im(z)) + \5 + im (y) - re (y) + re(z)/ *cos|----------------------------------------------------------| + re(y)| \ \ \ 2 / / \ 2 / / \ \ \ 2 / / \ 2 / /
=
2 2 20 - re(z) - 2*im (y) + 2*re (y) + 10*re(y) - I*im(z) + 10*I*im(y) + 4*I*im(y)*re(y)
20 - re(z) - 2*im(y)^2 + 2*re(y)^2 + 10*re(y) - i*im(z) + 10*i*im(y) + 4*i*im(y)*re(y)