3 4 x 2 4 x 6 9 July 8, 2019 16 32 64 128 3 x 4 4 x 6 9 x 2 18 3 4 x 6 )- 1 4x 2 4 x 9 Tính nhanh 3 4 x 4 x 6 9 x 2 18 3 4 x 2 9 3 x ( 4 / ( 6 − 2 ) + 2 ) ^ 2 4 3×(-2 6)
