计算:(2/3ab²-2ab)×1/2ab

问题描述:

计算:(2/3ab²-2ab)×1/2ab

(2/3ab²-2ab)×1/2ab
=1/3a²b³-a²b²

(2/3ab²-2ab)×1/2ab
=2ab(1/3b-1)×1/2ab
=1/3b-1

:(2/3ab²-2ab)×1/2ab
=1/3a^2b^3-a^2b^2