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分式化简
、(a^+7a+10)/(a^2+6a+5)·(a^2-a+1)/(a^+4a+4)除(a^2-a+1)/(a+2)...
、(a^+7a+10)/(a^2+6a+5)·(a^2-a+1)/(a^+4a+4)除(a^2-a+1)/(a+2)
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原式=[(a+2)(a+5)/(a+1)(a+5)][(a²-a+1)/察岁凯(a+2)²]×[(a+2)/(a²-a+1)]
=[(a+2)/(a+1)][(a²-a+1)/(a+2)²败唤雀基]×[(a+2)/(a²-a+1)]
=(a+2)²(a²-a+1)/[(a+1)(a+2)²(a²-a+1)]
=1/(a+1)
=[(a+2)/(a+1)][(a²-a+1)/(a+2)²败唤雀基]×[(a+2)/(a²-a+1)]
=(a+2)²(a²-a+1)/[(a+1)(a+2)²(a²-a+1)]
=1/(a+1)
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