-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
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-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
=1/4ab-2a^2b+1/2ab
=3/4ab-2a^2b
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
=-3/4ab+ab-1/2ab+2/3a^2b-a^2b-5/3a^2b
=ab(-3/4+1-1/2)+a^2b(2/3-1-5/3)
=ab(-3/4+4/4-2/4)+a^2b(2/3-1-5/3)
=-1/4ab-2a^2b
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
5ab^2-{2a^b-[3ab^2-(4ab^2-2a^2b)]}
合并同类项5a²b-3ab-4ab²+7ab-2ab²
(a-b)^3+2ab(a-b)
ab/a+b=3 a-2ab+b/2a-3ab+2b?
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
3a²b-[2ab²-6(ab-1/2a²b)+4ab]-2ab
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
证明(a^2+ab+b^2)^2+4ab(a+b)^2=(a^2+3ab+b^2)
证明(a^2+ab+b^2)^2+4ab(a+b)^2=(a^2+3ab+b^2)
3(-2ab+3a)-(2a-b)+6ab
3(-ab+2a)-(3a-b)+2ab
3(-ab+2a)-(3a-b)+3ab
a-b=-2,ab=-1时,(3a-4b-ab)-(2a-3b+5ab)=?
已知a-b=-1,ab=-2,求代数式(3a-4b-ab)-(a-2b+3ab)
a+b=5 ab=-3 (2a-3b-2ab)-(a-4b-ab)