El profesor se sorprenderá mucho al ver tu solución correcta😉
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(2)^2 - 4 * (1) * (4) = -12
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
___ x1 = -1 - I*\/ 3
___ x2 = -1 + I*\/ 3
x2 = -1 + sqrt(3)*i
suma
___ ___ -1 - I*\/ 3 + -1 + I*\/ 3
=
-2
producto
/ ___\ / ___\ \-1 - I*\/ 3 /*\-1 + I*\/ 3 /
=
4
4
x1 = -1.0 - 1.73205080756888*i
x2 = -1.0 + 1.73205080756888*i
x2 = -1.0 + 1.73205080756888*i