解x^2y+xy^2=42
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解x^2y+xy^2=42解x^2y+xy^2=42解x^2y+xy^2=42X^2y+xy^2=xy(x+y)=42*17=714
解x^2y+xy^2=42
解x^2y+xy^2=42
解x^2y+xy^2=42
X^2y+xy^2
=xy(x+y)
=42*17
=714
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