2 2x 2 4x 1 July 8, 2019 16 32 64 128 2x 2 4x 2 180 3x 2 2x 2 4x 1 2x 2 x 2 4x 1 2x 2 4x 1 0 2x 2 4x 16 2x 2 4x 16 0 2x 2 4x 10 0 2x 2 4x 1 0 completing the square 2x 2 4x 12 2x 2 4x 14 2x 2 4x 12 0 2x 2 4x 1 0 quadratic formula 2x 2 4x 15 2x 2 4x 14 0 2x 2 4x 10 complete the square