化简[x-1-(8/x+1)]/(x+3)/(x+1)

问题描述:

化简[x-1-(8/x+1)]/(x+3)/(x+1)

X+3

[x-1-(8/x+1)]/(x+3)/(x+1)
=[(x-3)(x+3)/(x+1)]/(x+3)/(x+1)
=x-3