2х²+х-1>0
Д=1+8=9=3²
х=(-1±3)/4
х1=-1;х2=1/2
х€(-оо;-1)+(1/2;+оо)
11х-6-3х²>0
3х²-11х+6<0<br>Д=121-72=49=7²
х=(11±7)/6
х1=3;х2=4/6=2/3
х€(2/3;3)
(3х-1/(х+2)≠1
(3х-1-х-2/(х+2)≠0
2х≠3
х≠3/2;х≠-2
(3х-2)(х+2)-1>0
(3х-2-х-2)/(х+2)>0
2(х-3/2)/(х+2)>0
__+____-2___-__3/2_____+_
{х€(-оо;-2)+(3/2;+оо)
{(2/3;3)
=>(2/3;1,5)¢ОДЗ