化简求值过程要详细

2025-02-26 01:05:32
推荐回答(3个)
回答1:

回答2:

原式={1/(x-1)+(x+1)^2/(x+1)(x-1)}*(x-1)/(x+1)
=1/(x+1)+1+2
则X=0

回答3: