[ab(3-b)-2a(b-1/2b^2)]x(-3a^2b^3)=

分类: 作业答案 • 2023-01-18 11:17:39

问题描述：

答

[ab(3-b)-2a(b-1/2b^2)]x(-3a^2b^3)
=[3ab-ab^2-2ab+ab^2]*(-3a^2b^3)
=ab*(-3a^2b^3)
=-3a^3b^4