
若m/x的平方-y的平方=2xy-y的平方/x的平方-y的平方+x-y/x+y 则m等于
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由题意可得:
(2xy-y²)/(x²-y²) + (x-y)/(x+y)
=[(2xy-y²) +(x-y)²]/(x²-y²)
=x²/(x²-y²)
=m/(x²-y²)
所以:m=x²
(2xy-y²)/(x²-y²) + (x-y)/(x+y)
=[(2xy-y²) +(x-y)²]/(x²-y²)
=x²/(x²-y²)
=m/(x²-y²)
所以:m=x²
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