计算 (x-2y)^6÷(2y-x)^5
计算:(x-y)^7÷(y-x)^6+(-x-y)^3÷(x+y)^2
计算:(x-y)^2*(y-x)^2*(x-y)^6
计算:(x+2y)(3x-5y)-(6x的四次方y²-2x²y²)÷(2x²y&
计算:(x+y/x-y)÷(xy+x^2)
[(2x+y)(x-3y)+y(x+3y)]÷(2x)计算,
计算:(X+Y)^5÷(-X-Y)^3*(X-Y)^2
计算:(x—y)^7÷(y—x)^6+(—x—y)^3÷(x+y)^2
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
计算:(x+y)^2×(-x-y)^3×[-3/4(x-y)^3]×5/6(y-x)^2
计算:(-x-2y) * (3x-y)
计算 {2(x-y)的平方-8(x-y)的平方(x+y)+6y(x-y)的平方}÷2(x-y)的平方 等于
计算(x+y)(x+y)^2(-x-y)^3