0 2 x 81 July 8, 2019 16 32 64 128 X 2 81x 0 X 2 2x 81 0 X 2 81 ≥ 0 0 2 x 9 81 X 2 81 0 solve by factoring X 2 81 0 square roots X 2 81 0 solve X 2 81 0 quadratic equation X 2 81 0 factor X 2 81 0 square root method
