化简求值 （x²／1＋y²／1＋xy／2﹚÷x²y²／x+y 当x+y-2013=0（x²分之1＋y²分之1＋xy分之2﹚÷x²y²分之x+y

化简求值 （x²／1＋y²／1＋xy／2﹚÷x²y²／x+y 当x+y-2013=0（x²分之1＋y²分之1＋xy分之2﹚÷x²y²分之x+y
化简求值 （x²／1＋y²／1＋xy／2﹚÷x²y²／x+y 当x+y-2013=0
（x²分之1＋y²分之1＋xy分之2﹚÷x²y²分之x+y

化简求值 （x²／1＋y²／1＋xy／2﹚÷x²y²／x+y 当x+y-2013=0（x²分之1＋y²分之1＋xy分之2﹚÷x²y²分之x+y
（x²分之1＋y²分之1＋xy分之2﹚÷x²y²分之x+y
=（1/x+1/y）²×x²y²/(x+y)
=(x+y)²/(x²y²)×x²y²/(x+y)
=x+y;
=2013;
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友情提醒：/这个代表分数线，也代表除号，分数线左侧是分子，右侧是分母


（1/x²＋1/y²＋2/xy﹚÷(x+y)/x²y
=(1/x+1/y)²*x²y²／(x+y)
=[(x+y)/xy]²*x²y²／(x+y)
=(x+y)²/x²...

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友情提醒：/这个代表分数线，也代表除号，分数线左侧是分子，右侧是分母


（1/x²＋1/y²＋2/xy﹚÷(x+y)/x²y
=(1/x+1/y)²*x²y²／(x+y)
=[(x+y)/xy]²*x²y²／(x+y)
=(x+y)²/x²y²*x²y²／(x+y)
=x+y

当x+y-2013=0时，x+y=2013

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