问题标题:
若根号x+y-3+绝对值xy+x+y-2=0,求x/y+y/x根号x+y-3+绝对值xy+x+y-2=0,求x/y+y/x
问题描述:

若根号x+y-3+绝对值xy+x+y-2=0,求x/y+y/x

根号x+y-3+绝对值xy+x+y-2=0,求x/y+y/x

李东华回答:
  有题意得   x+y-3>=0   xy+x+y-2>=0   因为根号x+y-3+绝对值xy+x+y-2=0   则x+y-3=0   xy+x+y-2=0   xy=-1   x+y=3   x^2+y^2=11   x/y+y/x=(x^2+y^2)/xy=-11
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