这步因式分解怎么弄的,快,谢谢

2025-06-26 20:28:47
推荐回答(1个)
回答1:

=(x²+x-2)+(-2xlnx+2lnx)
=(x-1)(x+2) - 2lnx(x-1)
=(x-1)(x+2 - 2lnx)