计算(x^2y^3)^n+(-x^n)^2*(-y^n)^3等于多少

计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n 计算(x^2y^3)^n+(-x^n)^2*(-y^n)^3等于多少 计算 (-x-y)^2n乘(-x-y)^3 (x^n+y^n)(x^n-y^n)-(x^n+y^n)² 计算. 计算：（x^2n-2x^ny^n+y^2n)/(x^n-y^n)（n为正整数）= 计算(x-y)的n次方*[(y-x)的3次方+5(x+y)的n次方(y-x)的2n次方]=______(n为正整数) 计算(x-y)^3n*(y-x)^2n÷(y-x)^5n（n为正整数,且x≠y） 计算(x^(2n)+x^n+1)(x^(3n)-x^(2n)+1) 怎么计算(x-y)^m*(x-y)^（n+2）*(y-x)^3 (-2x^n+1y^n)·(-3xy)·（-1/2x²z)计算 (-2x^n+1y^n)·(-3xy)·（-1/2x²z)计算 计算(x-y-m+n)(x-y+m-n) 计算：【（x-y)/(m-n)】的立方×【（n-m）/(y-x)】的四次方×【(2m-2n)/3y-3x】的平方 计算：1.[(m+n)(n-m)-(m+n)^2+3m(m+n)]除以（-2M),其中m=-4,n=2 2.(x+y)(-x+y)-(x-y)^2-(X^2y-xy^2)除 m(x-y)^n+n(y-x)^2n因式分解 计算：(x-y)^2/(x+y)÷(y-x)×1/(x-y)(m^2-4n^2)/(3mn^3)×mn/(m+2n) 计算 (x-2y)的n次方·(2y-x)的2n-1次方 [(x+y)^2n]^4/(-x-y)^(2n+1)计算快