2 7x 4x 2 0 July 8, 2019 16 32 64 128 4x 2 7x 2 0 quadratic formula 4x 2 7x 2 0 factoring 4x2 7x 2 0 4x 4 7x 2 2 0 3x 3 4x 2 7x 2 0 15 2x 2 4x 7x 2x 2 0 4x 2 7x 2 0 completing the square 2x 7