Question

RESOLVA AS EQUAÇÕES DE 2º GRAU (x – 2) (x – 3) = 12 *

Answer 1

Resposta:

(x-2)(x-3) = 12

x^2 -3x -2x +6 = 12

x^2 -5x +6 = 12

x^2 -5x -6 = 0

x^2 +x -6x -6 = 0

x(x + 1) . -6(x +1) = 0 , corta x + 1

(x+1) . (x-6) = 0

x = -1

x = 6