【参考答案】3
1/(x^2 -1)=1/(x-1)
1/(x^2 -1)=(x+1)/(x^2 -1)
即 1=x+1
解得 x=0
将x=0带入[(x-1)/(2-x)]-1=m/(x-2)
(-1/2)-1=m/(-2)
-3/2=m/(-2)
解得 m=(-2)×(-3/2)=3
不理解欢迎追问...