(a^2b^3-a^2b^2)/(ab)^2=?
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(a^2b^3-a^2b^2)/(ab)^2=?(a^2b^3-a^2b^2)/(ab)^2=?(a^2b^3-a^2b^2)/(ab)^2=?(a²b³-a²b&sup
(a^2b^3-a^2b^2)/(ab)^2=?
(a^2b^3-a^2b^2)/(ab)^2=?
(a^2b^3-a^2b^2)/(ab)^2=?
(a²b³-a²b²)/(ab)²
原式=[a²b²(b-1)]/a²b²
=b-1
(a-b)^3+2ab(a-b)
(ab(a^-2ab)-a^2b(a-3b))÷(3a^b)
a+b/2ab
2AB/A+B
a+b/2ab
-2ab(3a^2-2ab-4b^2) (2b-a)b-(2a-b)a-2ab(3a^2-2ab-4b^2)(2b-a)b-(2a-b)a
因式分解a(a+b)-(3ab-b^2)
(a-b)^2/ab-(a^2-b^2)/ab
3(-ab+2a)-(3a-b)+3ab
计算(a/a-b+b/b-a)/(1/a+b)的结果 (1)a-b (2)ab (3)a^2-b^2 (4)a+b
(a-b)(3ab+2a²b-b³)
ab/a+b=3 a-2ab+b/2a-3ab+2b?
ab^3+b^2+b-a+1
-2ab乘以(-a^+6a^b-3a+b)
18ab(a-b)^2-12a(b-a)^3
(a-b)平方-2ab(b-a)
已知a+b=A,ab=A+2008,1-2(a+ab)+(ab-2b)=3A.求a+b和ab的值
a^3-ab^2 =a (a^2 -b^2) =a(a+b)(a-b)