2x2−x−6 = 0
2x2−4x+3x−6 = 0
2x(x - 2) + 3(x - 2) = 0
(2x + 3) (x - 2) = 0
Either; 2x + 3 = 0 or x - 2 = 0
x = −32 or x = 2