12x 2 3x 9 0 July 8, 2019 16 32 64 128 3x 4 12x 2 9 0 3x 2 12x 9 0 complete the square Factor 3x 2 12x 9 0 Solve 3x 2 12x 9 0 12x 9 12 x 9/2 12-3x 9