a-1分之a²-a-1,化简
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a-1分之a²-a-1,化简a-1分之a²-a-1,化简a-1分之a²-a-1,化简(a²-a-1)/(a-1)=[a(a-1)-1]/(a-1)=a-1/(a
a-1分之a²-a-1,化简
a-1分之a²-a-1,化简
a-1分之a²-a-1,化简
(a²-a-1)/(a-1)
= [a(a-1)-1]/(a-1)
= a-1/(a-1)
即：化简结果为 a减去a-1分之1 .