3+ модуль (x^2-2x-3)

x^2-2x-3=0 (x-3) (x+1) [-1; 3]3-x^2+2x+3-3x<0-x^2-x+6<0x^2+x-6>0 (x+3) (x-2) >0 (2; 3] 3x<-1 U x>33+x^2-2x-3<3xx^2-5x<0x (x-5) <0 (0; 5) (3; 5) 43+4=7 ответ 7 (2x^2-5x-12)*sqrt (x+5) /sqrt (2x^2-5x+28)=2 (x-4) (x+1,5) sqrt (x+5) /sqrt (2 (x-4) (x-3,5) x>4; x<3,5 x>=-5 (x-4) (x+1,5) <= 0 (-1,5; 4) (-1,5; 3,5) U (3,5; 4) y'=4-25/x^24x^2-25<0x^2<25/4-2,5