El profesor se sorprenderá mucho al ver tu solución correcta😉
Dividamos ambos miembros de la ecuación en -1
x1 = pi - re(asin(cos(y))) - I*im(asin(cos(y)))
x2 = I*im(asin(cos(y))) + re(asin(cos(y)))
x2 = re(asin(cos(y))) + i*im(asin(cos(y)))
suma
pi - re(asin(cos(y))) - I*im(asin(cos(y))) + I*im(asin(cos(y))) + re(asin(cos(y)))
=
pi
producto
(pi - re(asin(cos(y))) - I*im(asin(cos(y))))*(I*im(asin(cos(y))) + re(asin(cos(y))))
=
-(I*im(asin(cos(y))) + re(asin(cos(y))))*(-pi + I*im(asin(cos(y))) + re(asin(cos(y))))
-(i*im(asin(cos(y))) + re(asin(cos(y))))*(-pi + i*im(asin(cos(y))) + re(asin(cos(y))))