a²-b²分之b²与a+b通分
a²-b²分之b²与a+b通分
数学人气：543 ℃时间：2020-03-31 13:52:45
优质解答
b²/(a²-b²)+a+b=b²/(a²-b²)+(a+b)x(a²-b²)/(a²-b²)=[b²+(a+b)x(a²-b²)]/(a²-b²)=(b²+a3+a²b-b3 )/ (a²-b²)
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