0 5 x 4 x 2 x 0 25 July 8, 2019 16 32 64 128 Tính nhanh 0 5 x 4 x 0125 x 2 x 8 x 0 25 0 25 x 8 x 4 x 0 5 x 0125 x 2 0 4 · (x − 3) + 2 5 = 0 5 · (4 + x) 2) x / 0 25=- 4^ 2 5 2 0 x − 4 ( 5 x + 3 ) 2) 5 4(0.5x + 4) =8 1(4+x)