2 12x 4 0 July 8, 2019 16 32 64 128 9x 2 12x 4 0 X 2 12x 4 0 5x 2 12x 4 0 3x 2 12x 4 0 8x 2 12x 4 0 2x 2 12x 4 0 9x 2 12x 4 0 discriminant 7x 2 12x 4 0 4x 2 12x 4 0 9x 2 12x 4 0 дискриминант 6x 2 12x 4 0 Solve x 2 12x 4 0 by completing the square 3x 2 12x x 4 0 3x 3 x 2 12x 4 0 2x 3 9x 2 12x 4 0