计算:(a²-b²)/(ab)-(ab-b²)/(ab-a²)(a²-b²)/(ab)-(ab-b²)/(ab-a²)
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计算:(a²-b²)/(ab)-(ab-b²)/(ab-a²)(a²-b²)/(ab)-(ab-b²)/(ab-a²)
计算:(a²-b²)/(ab)-(ab-b²)/(ab-a²)
(a²-b²)/(ab)-(ab-b²)/(ab-a²)
计算:(a²-b²)/(ab)-(ab-b²)/(ab-a²)(a²-b²)/(ab)-(ab-b²)/(ab-a²)
原式=(a方-b方)/ab -b(a-b)/a(b-a)
=(a方-b方)/ab+b/a
=(a方-b方)/ab+b方/ab
=(a方-b方+b方)/ab
=a方/ab
=a/b