4x 2 5x 12 25 July 8, 2019 16 32 64 128 Factorise 4x 2 12 5x 9 25 Factorize 4x 2 12 5x 9 25 4x ^ 2 - 5x - 12 = 12 4x ^ 2 - 5x - 12 = 22