2 9 x 4 15 July 8, 2019 16 32 64 128 9 4 x 2 3 10 15 2 15 x 9 4 6 6x8 3 2 15 x 9 4 6 3x8 3 3x 15 9 2 x 4 Factor $9 x 2 15x 4 15 1 2 x 9 3 4 2 mũ 15 x 9 mũ 4 2 0 x 15 3 x 9 4 1 2 x 23 9 1 4 x 15 7 2 4/9 x 2 15 x 9-1/2 2 x 9/4
