3x 2 12x 9 0 July 8, 2019 16 32 64 128 3x 2 12x 9 0 complete the square 3x 2 12x 9 0 solve for x 3x 4 12x 2 9 0 Solve 3x 2 12x 9 0 Factor 3x^2 + 12x + 9= 0 3x2 12x 9 0 formula general