计算:(6x^5-7x^4y+x^3y^2+20x^2y^3-22xy^4+8y^5)/(2x^2-3xy+y^2)

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 计算:(6x^5-7x^4y+x^3y^2+20x^2y^3-22xy^4+8y^5)/(2x^2-3xy+y^2) x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) [-(x-y)^2/xy]^-4*(y^2-xy/x)^3*(x^4/y^10)÷(xy-y^2/x)^-5=-y(y- 因式分解 求过程 x-xy+3y-3x 2x+xy-y-4x+5y-6 若x+y=-1,则x^4+5x^3y+x^2y+8x^2y^2+xy^2+5xy^3+y^4=( ) x+y=8,xy=-2,求(5xy+4x+7y)+(6x-3xy)-(4xy-3y)的值 计算：(5-xy/x^3-x^2y)/(1-5/xy)^2*(y-x)^3 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y) (3x-y)^2+(2x+3y)(-2x-3y)+5xy 计算