9x^2+18(n-1)x+18n

9x^2+18(n-1)x+18n 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 x^(n)*x^(n+1)+x^(2n)*x 若(x^2+1/x)^n(n∈N+,n 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) 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 (8x^n+1-3x^n-1)-2(-x+9x^n+1-4x^n)= x^n-2x^n+1,因式分解 x^n*x^n+1*(-x)^2n*x+(-x)^2n+3x^2n-2*x 18x n减1次方-24x n次方 (-x)^3x^n-1+x^2n(-x)^3 9x^(n+1)-36^n+36x(n-1) 9x^(n+1)-36^n+36x(n-1)