Question

3x^2 + 9x + 4x + 12

Answer 1

steps below

Explanation:

3x² + 9x + 4x + 12 = 3x² + 13x +12 = (x+3)(3x+4)

if 3x² + 9x + 4x + 12 = 0 x = -3 or x = - 4/3