x^4+1因式分解 怎么分解

2025-12-15 01:02:56
推荐回答(1个)
回答1:

x^4+1
=x^4+2x^2+1-2x^2
=(x^2+1)^2-2x^2
=(x^2+根号2x+1)(x^2-根号2x+1)