Ola Gui

(x - 3)*(x + 2) = -4

x^2 - x - 6 + 4 = 0

x^2 - x - 2 = 0

delta

d^2 = 1 + 8 = 9

d = 3

x1 = (1 + 3)/2 = 2

x2 = (1 - 3)/2 = -1

pronto

Matemática