Solve the equation, x^2 + 3x - 54 = 0.

A. x = 6 or x = -9

B. x = -1/3 or x = -2

C. x = -1/3 or x = 50

D. x = -1 or x = -9

Respuesta :

x^2 + 3x - 54 = 0
(x + 9)(x - 6) = 0

x + 9 = 0
x = -9

x - 6 = 0
x = 6

answer is A. x = 6 or x = -9