( x)^3×(x)^2n 1+(x)^2n×( x)^2(x)^3×(x)^2n-1+(x)^2n×(x)^2

(-x)^3x^n-1+x^2n(-x)^3 x^n*x^n+1*(-x)^2n*x+(-x)^2n+3x^2n-2*x x^(n)*x^(n+1)+x^(2n)*x (4x^n-2x^n-1-3x^n+2)÷（-5x^n-1) 计算(x^(2n)+x^n+1)(x^(3n)-x^(2n)+1) x^n-1(3x^n+4x^n+1-5x^n+2) C语言 f(x)=1+x+x^2/2!+x^3/3!+...+x^n/n!直到|x^n/n| 分解因式(1+x+x^2+x^3+.x^n)^2-x^n 计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1) f(x)=x(x-1)(x-2)(x-3).(x-n),则f(x)的n+1阶求导 3x^n(1-x)-2(x^n-2x^n+1) 用提取公因式法 ( x)^3×(x)^2n 1+(x)^2n×( x)^2(x)^3×(x)^2n-1+(x)^2n×(x)^2 (8x^n+1-3x^n-1)-2(-x+9x^n+1-4x^n)= 求和:1+x+x^2+.+x^n 1+x+x(x+1)+x(x+1)^2+.+x(x+1)^n (n为整数) 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