计算：（x^3)^n÷x^2n÷x^n-1

计算：（x^3)^n÷x^2n÷x^n-1 (4x^n-2x^n-1-3x^n+2)÷（-5x^n-1) 计算(x^(2n)+x^n+1)(x^(3n)-x^(2n)+1) 计算：(x^n)^n*36x^n 计算：(x^n)^n*36x^n 已知 x ^3n-2 ÷x^ n+1 =x^3-n×x^n+2,求n的值 计算(x-y)^3n*(y-x)^2n÷(y-x)^5n（n为正整数,且x≠y） 、计算:x^3m+2n÷x^m+n= 计算:(2x^3n)(2x^n)^3=2x^6n 计算：(m+2n)/(n-m)+n/(m-n)-2m(n-m)和[(x+2)/(x×x-2x)-(x-1)/(x×x-4x+4)]÷(x-4)/x (-x^2n-2)*(-x)^5÷[x^n+1*x^n*(-x)]=? (-x^2n-2)(-x)^5÷[x^n+1·x^n`(-x)] (6x^2n-24)/[x^(2n+3)+6x^(n+3)+9x^3]×(x^n+3)/(x^n-2)÷(3x^n+6)/[x^(n+2)+3x^2]哪位大虾会的= =(6x^2n-24)/[x^(2n+3)+6x^(n+3)+9x^3]×(x^n+3)/(x^n-2)÷(3x^n+6)/[x^(n+2)+3x^2]不知道哪根葱能出出这么令人吐血的题目! 计算（x的2n次方-2x的n次方+y的2n次方）÷（x的n次方-y的n次方） 计算x^3n/(x^2-1)-x^2n/(x^n+1)-1/(x^n-1)+1/(x^n+1) 计算x^n·x^n+1+x^n+1·x^n+2+(-x)^3·(-x)^2n-4急在线等速度Rt x^2n-3x^n 计算：（x^2n-2x^ny^n+y^2n)/(x^n-y^n)（n为正整数）=