因式分解:(a^2+3a)^2-(a-1)^2

2025-02-27 20:46:34
推荐回答(1个)
回答1:

=(a²+3a-a+1)(a²+3a+a-1)
=(a²+2a+1)(a²+4a-1)
=(a+1)²(a²+4a-1)