El profesor se sorprenderá mucho al ver tu solución correcta😉
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-7)^2 - 4 * (4) * (5) = -31
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
____ 7 I*\/ 31 x1 = - - -------- 8 8
____ 7 I*\/ 31 x2 = - + -------- 8 8
x2 = 7/8 + sqrt(31)*i/8
suma
____ ____ 7 I*\/ 31 7 I*\/ 31 - - -------- + - + -------- 8 8 8 8
=
7/4
producto
/ ____\ / ____\ |7 I*\/ 31 | |7 I*\/ 31 | |- - --------|*|- + --------| \8 8 / \8 8 /
=
5/4
5/4
x1 = 0.875 + 0.695970545353753*i
x2 = 0.875 - 0.695970545353753*i
x2 = 0.875 - 0.695970545353753*i