2(x^2+y^2)^2-8xy(x^2+y^2)+8x^2y^2

因式分解:8(x-2y)-x(7x+y)+xy. 因式分解：x×x-xy-2y×y-x-y （x^2+xy/x-y)/（xy/x-y)计算 （xy-x^2)乘以(xy)/(x-y) 计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2) x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 作乘法:(x+y)(x^2-xy+y^2)；(x-y)(x^2+xy+y^2) x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y (x+y)(x-y)-(2xy+3y)平方 2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分 (x+y-2xy)(x+y-2)+(1-xy)²