计算：(x-y)^8÷(y-x)^4×(x-y)

计算：(x-y)^8÷(y-x)^4×(x-y) (X-Y)^8÷(Y-X)^4÷(X-Y)^3=-(X-Y)这个计算结果对吗? 计算 [ ( x+y ) ( x-y ) ] ^ 9 ÷ ( y-x )^ 8 ÷ ( -x-y )^9 计算 [12(x+y)³(y-x)]³÷[4(x+y)²（x-y)]² 计算：[（x+y）³-2(x+y)²-4(x+y)]÷（x+y) 计算[(x+y)的立方-2(x+y)的平方-4(x+y)]÷(-x-y) 计算 (x^8+y^8)(x^4+y^4)(x^2+y^2)(x+y)(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^4-y^4)÷(x²+y²)计算 计算 3x+4y/x-y+3y/y-x-4x/x-y 计算:1/(x-y)-1/(x+y)-2y/(x^2+y^2)-4y^3/(x^4+y^4)-8x^7/(x^8+y^8) 计算：(8y^2/x-2y)+(x^2/2y-x)-(4y^2/x-2y) 计算:y×(y/x)^3÷[-(x^2)/y]^-2 计算：[(4x^2-1/2y)^2+4y(x^2-1/16y)]÷(-8x^2) 计算 ( x-2y )^4 ÷ ( 2y-x )^ 2 ÷ ( x-2y ) 计算:2xy/(x+y)².(x+y)/4y 计算,(x-y-x-y分之4y的平方 计算(-x-y)(y-x)+(-x-y)(x+y),