Step-by-step explanation:
x² + 5x + 6 = (x+2)(x+3)
x² + 5x + 6 = x² + 2x + 3x + 6
        = (x² + 2x) + (3x + 6)
        = x(x+2) + 3(x+2)
        = (x+2)(x+3)
step-by-step explanation:
for the free