[(x+y)^3]^6-3[(x+y)^3]^6X(x+y)^4X(-x-y)^2

因式分解3x^2(x-y)+6x(y-x) x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y( [(x+y)^3]^6-3[(x+y)^3]^6X(x+y)^4X(-x-y)^2 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2 2(2x+3y)(3x+2y)-(6x-y)(2x-5y)