X 3 2 9 25 July 8, 2019 16 32 64 128 X 1 3 2 25 9 X2 9 x 3 2 8x 25 25 x 3 mũ 2 9 9 2 x 3 4 25 4 25 4 1 x 3 9 2 3 x 5 )- 25 9 2 x 7 25 √ 16 1 x 3 9 2 3 x 3 = 9
