12 3x 5x 0 July 8, 2019 16 32 64 128 12 5x 3x 2 0 3x 12 11x 5x 1 0 3x 2 5x 12 0 quadratic formula 12 3x 2 5x 8x 3x 2 0 3x 2 5x 12 0 by factorisation 12 5x3
