36(x+2y)^2-25(x-2y)^2=?x^8-1=?(x-y+z)^2-(2x-3y+4z)^2=?36(x+2y)^2-25(x-2y)^2=x^8-1=(x-y+z)^2-(2x-3y+4z)^2=

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简y(x+y)+(x+y)(x-y)-x^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 (x-y)^2+12(x-y)+36 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 因式分解x(x+y)(x-y)-x(x+y)^2 [(x-y)^2-(x+2y)(x-2y)]/y 计算:y-x分之x+y+x-y分之y-y-x分之2x-y 因式分解(x+y)^2y^2-12(x+y)y^2+36y^2-y^4 x^2(x-y)+(y-x) x(x-y)2-(y-x)3 【(x-y)^2+(x+y)(x-y)】除以 2x [(x-y)²+(x+y)(x-y)]除以2x 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 计算.25(x+y)^2-0.81(x-y)^20.25(x+y)^2-0.81(x-y)^2 . 25(x-y)*2+10(y-x)+125（x-y)^2+10(y-x)+1 化简：[(x+y)(x-y)(x+y)^2-2y(x-2y)](-2y) 谢谢! [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x