3x 2 12x 7 0 July 8, 2019 16 32 64 128 3x 2 12x 7 0 completing the square 2x 3 3x 2 12x 7 0 3x 2 12x m 7 0 Solve 3x 2 12x 7 0 Without solving the equation 3x 2 12x 7 0 16x 3 12x 2 3x 7 0