问题
填空题
n是正整数,将多项式xn+1-5xn+2-4xn+3+xn-1按字母x降幂排列得______.
答案
多项式xn+1-5xn+2-4xn+3+xn-1的各项为xn+1、-5xn+2、-4xn、3、xn-1,
按x的降幂排列为:-5xn+2+xn+1-4xn+xn-1+3.
故答案为:-5xn+2+xn+1-4xn+xn-1+3.
n是正整数,将多项式xn+1-5xn+2-4xn+3+xn-1按字母x降幂排列得______.
多项式xn+1-5xn+2-4xn+3+xn-1的各项为xn+1、-5xn+2、-4xn、3、xn-1,
按x的降幂排列为:-5xn+2+xn+1-4xn+xn-1+3.
故答案为:-5xn+2+xn+1-4xn+xn-1+3.