1) 5x-6<2x<br>x<2<br>2) (3^5)(3^2х)<=9•3^х + 2<br>243•3^2х-9•3^х-2<=0<br>(243•3^2х-9•3^х-2=0
D=81+8•243=45^2
3^х=(9-45)/486 к.нет
3^х=(9+45)/486=(3^3)/(3^5)=3^(-2); х=-2)
х<=-2<br>3) (x-1)•х/2>1
х^2-х>2
х^2-х-2>0
(х+1)(х-2)>0
(-беск.;-1)u(2;беск.)
4) 2^х<0,5•2^х+3<br>2^х-0,5•2^х<3<br>2^х<6<br>х