化简-3(xy-2x)-2(3x+2xy)
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3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)
化简:xy分之3x^2+2xy-xy分之2x^2-xy=
计算:3xy(x²y-xy²+xy)-xy²(2x-xy+2x)
化简3x^2y-[2xy^2-2(xy-3/2x^2y)+xy]+3xy^2
化简!1、(x^2-xy)+xy+y^2 2、3(x^2-xy)-xy+y^2
5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y(化简)
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
2x平方-3xy+(2xy-x平方)化简!
因式分解X^3-2xy+xy^2
计算:3xy[2xy-x(y-2)+x]
2x²y-3(2xy-xy)-xy
化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]}
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
化简(3X平方-5Xy)+{-X平方-[-3Xy+2(X平方-xy)
化简 2(xy-xy²+3)-(-4xy²+xy-1) 其中,x等于--4,y等于-3
3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程
已知(x+1)*(x+1)=-Iy-1I,求2(xy-(5xy)*(5xy))-3((xy)*(xy)-xy)
5xy^2-{2x^y-[3xy^2-(xy^2-2x^2y)]/(-1/2xy)}