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