x^3+3xy-3x^2y-y^3能否化简(x^3+3xy-3x^2y-y^3)/(x-y)^2

x^3+3xy-3x^2y-y^3能否化简(x^3+3xy-3x^2y-y^3)/(x-y)^2 -x-3xy+y 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) X^Y-2XY^2+y^3 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 【x(xy-xy)-y(x-xy)】÷3xy 化简分式方程:x*x-xy-y*y/x*x-3x-6y+2xy [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y [x(x^2y^2-xy)-y(x^2-x^3y)]/(2x^2y) -xy^2(x+y)^3+x(x+y)^2因式分解 (x+3y)/(x^2+xy)-x+y计算题 x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________? (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 化简求值x-4y/2x-7xy+3y×x-2xy-3y/2x+3xy-2y÷3x-6y/4x-4xy+y,其中：x=1999,y=-1 x^2-xy-6y^2+3xy+y+2