2 15 x 9 4 6 3x8 3 July 8, 2019 16 32 64 128 2 mũ 15 x 9 mũ 4 6 mũ 3 x 8 mũ 3 15 3 х 4 / 9 + 3 2 15 x 9 = 2 15 x 3
