El profesor se sorprenderá mucho al ver tu solución correcta😉
2 9*x x - --- + 1 = 21/2 2
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-9/2)^2 - 4 * (1) * (-19/2) = 233/4
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
_____ 9 \/ 233 x1 = - - ------- 4 4
_____ 9 \/ 233 x2 = - + ------- 4 4
x2 = 9/4 + sqrt(233)/4
suma
_____ _____ 9 \/ 233 9 \/ 233 - - ------- + - + ------- 4 4 4 4
=
9/2
producto
/ _____\ / _____\ |9 \/ 233 | |9 \/ 233 | |- - -------|*|- + -------| \4 4 / \4 4 /
=
-19/2
-19/2