2 x 2 81 July 8, 2019 16 32 64 128 X 2 2 81 0 X 2 81y 2 X 2 2x 2 81 2 x 1 2 81 X 2 81x 2 Y 2 x 2 81 3 2 x 2 81 X 2 y 2 81 graph 4 x 2 2 81 9 x 2 2 81 X 2 18xy 81y 2 2 3 x 3 2 x 81 16 X 2 81y 2 factored