X 3 9x 2 9x 81 July 8, 2019 16 32 64 128 X 3 9x 2 9x 81 0 9x 2 81x x 3 8x 2 9x Factor x 3 9x 2 9x 81 X 3 9x 2 81x 729 0 9 x 8 = 3 x 3 = 9