Question

(x-1)(x-2)=6 esta fraçao me ajude

Answer 1

(x - 1)(x - 2) = 6
x² - 2x - x + 2 = 6
x² - 3x + 2 - 6 = 0
x² - 3x - 4 = 0

Delta = b² - 4ac
Delta = 9 - 4(1)(-4)
Delta = 9 + 16
Delta = 25

X = (-b +- raiz delta) / 2a
X = (3 +- 5) / 2
x' = (3 + 5) / 2 = 8/2 = 4
x" = (3 - 5) / 2 = -2/2 = -1