Х+2/х-1 + х+3/х+1 + х+5/-(х-1)*(1+х)=0
Х+2/х-1 + х+3/х+1 + х+5/(х-1)*(1+х)=0
(Х+1)(х+2)+(х-1)(х-3)(х+5) / (х-1)(х+1) =0
Х2+2х+х+2+х2+3х-х-3-5/(х-1)(х+1)=0
2х^2+4х-6/(х-1)(х+1)=0
2(х^2+2х-3)/(х-)(х+1)=0
2(х(х+3)-(х+3)-(х+3))/(х-1)(х+1)=0
Х+3=0
Х=-3
Ответ:х=-3