化简∶b/a-b+b³/a³-2a²b+ab³÷ab+b²/b²-a²
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b b³ ab+b²
_____ +____________ ÷ _______
a-b a³-2a²b+ab² b²-a²
b b³ b(a+b)
= _______+____________÷ ____________
a-b a(a²-2ab+b²) (b+a)(b-a)
b b³ (b+a)(b-a)
= ______ +_________× ___________
a-b a(b-a) ² b(a+b)
b b³ (b-a)
= ______+_______×___________
a-b a(b-a) ² b
b b²
= ______ +_______
a-b a(b-a)
b b²
= _____ - _________
a-b a(a-b)
ab b²
= ________— _________
a(a-b ) a(a-b)
ab — b²
= ___________
a(a-b )
b(a — b)
= ___________
a(a-b )
b
= ___
a
_____ +____________ ÷ _______
a-b a³-2a²b+ab² b²-a²
b b³ b(a+b)
= _______+____________÷ ____________
a-b a(a²-2ab+b²) (b+a)(b-a)
b b³ (b+a)(b-a)
= ______ +_________× ___________
a-b a(b-a) ² b(a+b)
b b³ (b-a)
= ______+_______×___________
a-b a(b-a) ² b
b b²
= ______ +_______
a-b a(b-a)
b b²
= _____ - _________
a-b a(a-b)
ab b²
= ________— _________
a(a-b ) a(a-b)
ab — b²
= ___________
a(a-b )
b(a — b)
= ___________
a(a-b )
b
= ___
a
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