Answer :
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
(x + 9)(x - 6) = 0
x + 9 = 0
x = -9
x - 6 = 0
x = 6
answer is A. x = 6 or x = -9