1.(1)(x^2y-xy^2)÷(x-y)=_________.
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1.(1)(x^2y-xy^2)÷(x-y)=_________.
3.(2)(3x^3y^2+6x^2y^3)÷(x+2y)
(3)(-9m^2+4n^2)÷(3m+2n)
3.(2)(3x^3y^2+6x^2y^3)÷(x+2y)
(3)(-9m^2+4n^2)÷(3m+2n)
1.xy 2.3x^2y^2 3.2n-3m
1.(1)(x^2y-xy^2)÷(x-y)=_________.
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已知2log3[(x—y) / 2]=log3(xy),则x / y=_________.
若x+y=3,xy=2,则(5x+2)-(3xy-5y)=_________
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