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

来源：学生作业帮助网编辑：六六作业网时间：2024/05/04 19:12:37

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

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

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