9 x 2 =( 1 27 x 3 July 8, 2019 16 32 64 128 9 4 x *( 8 27 x 1 2 3 9 x 2 * 3 x 117 3 x 27 1 9 pangkat x 2 1 27 pangkat x 3 1 2 9 x 0 x 27 31 9 x * 3 2 *( 3 x 2 2 1 27 find x 9 x 3 mũ 2 x 1 phần 81 x 27