4 x 2 81 July 8, 2019 16 32 64 128 X 4 2 81 0 X 4 81x 2 X 4 81x 2 0 X 4 18x 2 81 X 4 18x 2 81 0 X 4 9x 2 81 X 4 82x 2 81 0 9 x 4 2 81 3 x 4 2 81 4x 4 45x 2 81 0 6 x 2 81 * 4 x 3 4 x 2 81 256 $4 x 2 48x 81$ X 4 81x 2 factored X 4 81y 2
