计算:b/a-b加上b^3/a^3-2a^2b+ab^2除以ab+b^2/b^2-a^2
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计算:b/a-b加上b^3/a^3-2a^2b+ab^2除以ab+b^2/b^2-a^2
![计算:b/a-b加上b^3/a^3-2a^2b+ab^2除以ab+b^2/b^2-a^2](/uploads/image/z/18474269-5-9.jpg?t=%E8%AE%A1%E7%AE%97%3Ab%2Fa-b%E5%8A%A0%E4%B8%8Ab%5E3%2Fa%5E3-2a%5E2b%2Bab%5E2%E9%99%A4%E4%BB%A5ab%2Bb%5E2%2Fb%5E2-a%5E2)
=b/(a-b)+b³/a(a-b)²×[-(a+b)(a-b)]/b(a+b)
=b/(a-b)-b² /a(a-b)
=ab/a(a-b)-b²/a(a-b)
=b(a-b)/a(a-b)
=b/a
=b/(a-b)-b² /a(a-b)
=ab/a(a-b)-b²/a(a-b)
=b(a-b)/a(a-b)
=b/a
计算{(a-4ab除以(a+b)+b}除以{(a除以(a+b)-(b除以b-a)-(2ab除以a的平方-b的平方)}
因式分解 (a^2 -2ab-b^3)除以b-(a+b)(a-b)
因式分解a^+b^+2a^b+2ab^+a^+b^+3ab+a+b
已知(3a-b+1)的绝对值+(3a-b/2)^2=0求b^2/a+b除以(b/a+b*ab/a+b)的值
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a+b/2ab
2AB/A+B
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