因式分解:x^5-1 拆项添项法

2024-11-17 17:38:32
推荐回答(1个)
回答1:

x^5-1
=(X^5-X^4)+(X^4-X^3)+(X^3-X^2)+(X^2-X)+(X-1)
=(X-1)(X^4+X^3+X^2+X+1)