计算 (-2ab²)²·(3a²b-2ab-1)
计算 (-2ab²)²·(3a²b-2ab-1)
4(a-b)²-(2a+b)-(b+2a) (1+x-y)(x+y-1)(x+3y)(x²+9y²)(x-3y)
急!!!!!!
4(a-b)²-(2a+b)-(b+2a) (1+x-y)(x+y-1)(x+3y)(x²+9y²)(x-3y)
急!!!!!!
数学人气:538 ℃时间:2020-02-17 19:09:10
优质解答
(-2ab²)²·(3a²b-2ab-1)=4a²b^4·(3a²b-2ab-1)=12a²b^5-8a²b^5-4a²b^44(a-b)²-(2a+b)-(b+2a) =a²-2ab+b²-2a-b-b-2a=a²-2ab+b²-4a-2b(1+x...
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