(1) x^n+1-6x^n+9x^n-1怎么算?(2) x^4-13x^2y^2+36y^4 (3) (a^2-6a)^2+14(a^2-6a)+45用因式分解.T_T

因式分解4x^(n+2)-9x^n+6x^(n-1)-x^(n-2) 因式分解4x^n+2-9x^n+6x^n-1-x^n-2 f(x)=e^x-x 求证(1/n)^n+(2/n)^n+...+(n/n)^n 4x^n+2-9x^n+6x^n-1-x^n-24x^(n+2)-9x^n+6x^(n-1)-x^(n-2),n是整数且大于2 x^(n)*x^(n+1)+x^(2n)*x 9x^(n+1)-36^n+36x(n-1) 9x^(n+1)-36^n+36x(n-1) 若(x^2+1/x)^n(n∈N+,n 10x^20-6x^n+(x^n+1-9x^2n)-(4x^n+x^n+1)等于多少 分解因式：-9x^(n+1)-6x^n+3x^(n-1) 因式分解：(x^n+1)+(2x^n)+(x^n-1) x^n+1-2x^n+x^n-1因式分解 x^n-1-2x^n+x^n-1因式分解 分解因式x^n-x^(n-1)+x^(n-2) x^n-2x^n+1,因式分解 x^n*x^n+1*(-x)^2n*x+(-x)^2n+3x^2n-2*x 约分(x^n+2)+(x^n+1)-6x^n/(2x^n+1)+5x^n-(3x^n-1) (8x^n+1-3x^n-1)-2(-x+9x^n+1-4x^n)=