化简2x^2y-2xy+3y^2-(5x^2y+3xy-1)的结果是_____.

化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 化简x^-y^/x^-2xy+y^ 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]} 化简2(x²y+xy)-3(x²y-xy)-4x²y 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y（化简） x^2y-2xy+y化简 X^Y-2XY^2+y^3 -x^5y-xy+2x^3y 化简:-(x^2-2xy-y^2)+(5x^2-2xy-3y^2) 化简 -(x^2-2xy-y^2)+(5x^2-2xy-3y^2) 化简-(x方-2xy-y方)+(5x方-2xy-3y方) x²-y²+5x+3y+4（x+y-2xy)(x+y-z)+(xy-1）² x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) (-x-y)(x^2+xy+y^2)