①(-3ab)(2a^b+ab-1)②(6ab^3+2ab^2-3ab+1)(-2a^b)
1个回答
应该是这样(-3ab)(2a^b ab-)
=-6a^b 1-3a^2 ab
(6ab^3 2ab^2 1)(-2a^b)
=-12a^b 1-4a^b 1b^2-2a
相关问题
6ab-3【3b^2-(a^2-2ab)+1] a=-2 b=-1/3
计算 (a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6)
化简求值 ab^3+a^2b^3+2-2ab+3ab^3-a^2b^3+2ab-1,a=1,b=-1
A-B=-1,AB=-2,则(2A-3B-AB)-(A-2B+3AB)=?”
当a-b=-1,ab=-2,(2a-3b-ab)-(a-2b+3ab)
化简ab-2{ab-[3a²b-(4ab²+2/1ab)-3a²b]}-3ab²
1/3ab(2a^2-ab+6b^2)
(1/3a^2b-1/6ab)/( )=3ab
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
当a-b=-1,ab=-2时,(2a-3b-ab)-(a-2b+3ab)=______.