化简:a²-b²/a²-ab÷(a+2ab+b/a)
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化简:a²-b²/a²-ab÷(a+2ab+b/a)
化简:a²-b²/a²-ab÷(a+2ab+b/a)
化简:a²-b²/a²-ab÷(a+2ab+b/a)
a²-b²/a²-ab÷(a+2ab+b/a)
=(a-b)(a+b)/[a(a-b)]÷(a+2ab+b/a)
=(a+b)/a÷(a+2ab+b)/a
=(a+b)/(a+2ab+b)