求解2a²/(a²-b²)-b/(a-b)-a/(a+b)

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求解2a²/(a²-b²)-b/(a-b)-a/(a+b)求解2a²/(a²-b²)-b/(a-b)-a/(a+b)求解2a²/(

求解2a²/(a²-b²)-b/(a-b)-a/(a+b)
求解2a²/(a²-b²)-b/(a-b)-a/(a+b)

求解2a²/(a²-b²)-b/(a-b)-a/(a+b)

=1。。。。'