-3ab-4a^2+3a^2+5ab
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-3ab-4a^2+3a^2+5ab
解
-3ab-4a²+3a²+5ab
=(-4a²+3a²)+(5ab-3ab)
=-a²+2a
-3ab-4a²+3a²+5ab
=(-4a²+3a²)+(5ab-3ab)
=-a²+2a
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
-3ab-4a^2+3a^2+5ab
合并同类项: -5a^b+6ab^-4ab-2a^b+4ab+3
合并同类项:-5a^b+6ab^-4ab-2a^b+4ab+3
3(a^2-ab)-5(ab 2a^2-1)
化简:(-3ab)(-5ab)+2/3ab的二次方(7/3ab-2a)
若a+b=3,ab=-2,求(5a-5b-ab)-(4a-6b-3ab)
1.(4/3a^2b^2-2ab)*1/2ab 2.-2a^2*(-1/2ab+b^2)-5a*(a^2b+ab^2)
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
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)=