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计算题:x²/x+y -x+y
人气:361 ℃ 时间:2020-05-14 06:59:29
解答
x²/(x+y )-x+y
=x²/(x+y )-(x-y)
=x²/(x+y )-(x²-y²)/(x+y)
=(x²-x²+y²)/(x+y)
=y²/(x+y)
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