0 5 7 2х 1 5. А2х5. Х2=5х. (Х+5)(Х-2)<0. Х-1/2х2-5х+2. 3х+1/4-7х-х2/10 х2-1/8. У+3х=4 2х+4у=1. Х+1 3/4 5 1/3. -Х-2+3(Х-3)=3(4-Х)-3. У=Х-6/Х+5. (Х+6)(Х-1)<0. (Х+5)(Х-6)<=0. (Х^2+5х)^2+6(х2+5х)=0. |3х^2-11х+6|(6х^2-11х+3). (Х-5)/(Х+11)+(Х-11)/(Х+5)=0