已知x+y=6,xy=-3,则x^2y+xy^2=把下列各式分解因式:(1)12xyz-9x^2y^2(2)6a^2-9ab+3a(3)-2x^2-12xy^2+8xy^3已知a+b=6,ab=7,求a^2b+ab^2
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已知x+y=6,xy=-3,则x^2y+xy^2=?
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