一道数学通分题
一道数学通分题
2xy/(x+y)²与x/x²-y²
2xy/(x+y)²与x/x²-y²
数学人气：978 ℃时间：2020-05-22 01:58:24
优质解答
2xy/(x+y) ²= 2xy/((x+y)(x+y))x/(x²-y²)=x/((x+y)(x-y))所以公分母为 (x+y)(x+y)(x-y)所以通分结果为：2xy/(x+y) ² = 2xy(x-y)/((x+y) ²(x-y))x/(x²-y²) = x(x+y)/((x+y) ²...
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