Question

ajudem aí prfvr. ta difícil

Answer 1

-6x² + 4x + 2 = 0 (*-1)
6x² - 4x - 2 = 0 <<<<<<<<<
Delta = b² - 4ac
Delta = 16 - 4(6)(-2)
Delta = 16 + 48
Delta = 64
X = (-b +- raiz delta) / 2a
X = (4 +- 8) / 12
x' = (4 + 8) / 12 = 12/12 = 1
x" = (4 - 8) / 12 = -4/12 = -1/3