化简:a/a^2-1根号(a-1)^2/a^4(0

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化简:a/a^2-1根号(a-1)^2/a^4(0化简:a/a^2-1根号(a-1)^2/a^4(0化简:a/a^2-1根号(a-1)^2/a^4(0a/a^2-1根号(a-1)^2/a^4=a/(a

化简:a/a^2-1根号(a-1)^2/a^4(0
化简:a/a^2-1根号(a-1)^2/a^4(0

化简:a/a^2-1根号(a-1)^2/a^4(0
a/a^2-1根号(a-1)^2/a^4
=a/(a+1)(a-1)* (1-a)/a^2
=-1/a(a+1)