a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
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a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a+b/2ab
2AB/A+B
a+b/2ab
5ab^2-{2a^b-[3ab^2-(4ab^2-2a^2b)]}
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
2a²b(a-b)+ab(a-b)²+4ab²(a-b)
4ab/b^2(a-b)=
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
已知a-b=2,ab=-1 求(4a-5b-ab)-(2a-3b-5ab)
a-b=-2,ab=-1时,(3a-4b-ab)-(2a-3b+5ab)=?
a+b=5 ab=-3 (2a-3b-2ab)-(a-4b-ab)
若a+b=3,ab=-2,求(5a-5b-ab)-(4a-6b-3ab)
合并同类项5a²b-3ab-4ab²+7ab-2ab²
-ab(a^2b^5-ab^3-b)
先化简再求值﹕若a-b等于5,ab等于-5,求(2a+3b-2ab)-(a+4b+ab)-(3ab-2a+2b)
如a-b=4,ab=1,则(2-ab+2a+5b)-(3ab+2b-2a)-(3a+4b-ab)=
已知a-b=5,ab=-1,求(2a+3b-2ab)-(a+4b+ab)-(3ab+2b-2a)的值