El profesor se sorprenderá mucho al ver tu solución correcta😉
(4*x - 2)*(7*x - 7) + 3*x*(x + 1) = 0
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-39)^2 - 4 * (31) * (14) = -215
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
suma
_____ _____ 39 I*\/ 215 39 I*\/ 215 -- - --------- + -- + --------- 62 62 62 62
=
39 -- 31
producto
/ _____\ / _____\ |39 I*\/ 215 | |39 I*\/ 215 | |-- - ---------|*|-- + ---------| \62 62 / \62 62 /
=
14 -- 31
14/31
_____ 39 I*\/ 215 x1 = -- - --------- 62 62
_____ 39 I*\/ 215 x2 = -- + --------- 62 62
x2 = 39/62 + sqrt(215)*i/62
x1 = 0.629032258064516 - 0.236498037074438*i
x2 = 0.629032258064516 + 0.236498037074438*i
x2 = 0.629032258064516 + 0.236498037074438*i