X 4 7 2 10 8 July 8, 2019 16 32 64 128 4 x 2 7 8x 3 2x /- 10 X nhân 4 7 2 10 8 7 2 x chia 4 10 8 1) x = 7 2) x = - 4 3) - x =8 4 X 4 7 8
