0 6 x 7 1 2 x 45 1 8 July 8, 2019 16 32 64 128 0 6 x 7 1 2 x 45 1 8 tính nhanh - 6 7 / x = 0 01 x= - 6 7 / x = 0 1 x = - 6 7 / x = 0 01 0 6 x 1 7 0 7 x 6
