(8/(x2–4))–(x·(x–2)/(x2–4))–((x+1)·(x+2))/(x2–4) =0
(8–x2+2x–x2–3x–2)/(x2–4)=0
(–2x2–x+6)/(x2–4)=0
{–2x2–x+6=0
{x2–4≠0
–2x2–x+6=0
или
2x2+x–6=0
D=1–4·2·(–6)=49
x1=(–1–7)/4=–2 ( не удовл усл. x2–4≠0)
или
х2=(–1+7)/4=3/2=1,5
О т в е т. 1,5