9 2x 1 81 x 2 July 8, 2019 16 32 64 128 9 2x 1 81 x 2 3x 9 * 81 1 2x 27 2 x 9 2x 1 81 27 x If 9 2x 1 81 x 2 3 x find x 1 81 (- x 9 2x =( 27 3x 2 9 2x 4 x 9 2x 1 81 9 x 8 = 2x 9
