把2(x^2+y^2)^2-8xy(x^2+y^2)+8x^2y^2因式分解

把2x-2y+3xy(x-y)因式分解 把分式xy-y/x-2x+1约分 （x^2+xy/x-y)/（xy/x-y)计算 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 因式分解:8(x-2y)-x(7x+y)+xy. xy=11,x=2+y,y=x-2,把XY解出来 (-x-y)(x^2+xy+y^2) 化简x^-y^/x^-2xy+y^ 2*(x-y)²(y-x)(xy) 把x( 3)-4xy( 2)-2x( 2)y+8y( 3)因式分解 x^2-xy/xy-y^2约分 把2(x^2+y^2)^2-8xy(x^2+y^2)+8x^2y^2因式分解 .(x+y-2)(x+y-2xy)+(xy-1)^2 [-xy^2(2x+y)-8xy)-x^2y)]除以2xy=计算 (x^2-xy)y÷y-x/xy怎么做? 已知x-xy=8,xy-y=-9,求x+y-2xy的值 代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy (x+y)/x /(x-(2xy-y^2)/x) 因式分解