化简:(a2/a+1-a+1)/a2/a2-1

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化简:(a2/a+1-a+1)/a2/a2-1化简:(a2/a+1-a+1)/a2/a2-1化简:(a2/a+1-a+1)/a2/a2-1[a²/(a+1)-a+1]÷a²/(a&

化简:(a2/a+1-a+1)/a2/a2-1
化简:(a2/a+1-a+1)/a2/a2-1

化简:(a2/a+1-a+1)/a2/a2-1
[a²/(a+1)-a+1]÷a²/(a²-1)

=[a²-(a-1)(a+1)]/(a+1)÷a²/(a+1)(a-1)
=(a²-a²+1)/(a+1)×(a+1)(a-1)/a²
=1/(a+1)×(a+1)(a-1)/a²
=(a-1)/a²


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