若x+y=0,xy=-6则x^3y+xy^3的值是(请写过程)
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已知x-y=3xy,且xy不等于0,则-3x+6xy+3y/(7x-5y)-9xy-(3x-y)
若x+y=0,xy=-3则x^3y+xy^3=?
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若x+y=0,xy=-6则x^3y+xy^3的值是(请写过程)
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