化简:xy分之3x^2+2xy-xy分之2x^2-xy=
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化简:xy分之3x^2+2xy-xy分之2x^2-xy=
(3x^2+2xy)/xy-(2x^2-xy)/xy
=(3x^2+2xy-2x^2+xy)/xy
=(x^2+3xy)/xy
=x(x+3y)/xy
=(x+3y)/y
=(3x^2+2xy-2x^2+xy)/xy
=(x^2+3xy)/xy
=x(x+3y)/xy
=(x+3y)/y
化简:xy分之3x^2+2xy-xy分之2x^2-xy=
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