已知:x+2y=2011 求代數(shù)式{(x^+y^)-(x-y)^+2x(x+y)}/2x的值
已知:x+2y=2011 求代數(shù)式{(x^+y^)-(x-y)^+2x(x+y)}/2x的值
數(shù)學人氣：446 ℃時間：2020-06-05 01:14:05
優(yōu)質(zhì)解答
原式化簡=x＋2y=2011
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