ОДЗx²-x-20>0x1+x2=1 U x1*x2=-20⇒x1=-4 U x2=5 + _ +________________________________ -4 5x<-4 U x>5x+4>0⇒x>-4x∈(5;≈)log(0,5)(x²-x-20)/(x+4)>0(x²-x-20)/(x+4)<1(x²-x-20)/(x+4)-1<0(x²-x-20-x-4)/(x+4)<0(x²-2x-24)/(x+4)<0x1+x2=2 U x1*x2=-24⇒x1=-4 U x2=6(x+4)(x-6)/(x+4)<0x-6<0⇒x<6Объединим x∈(5;≈) и x<6⇒x∈(5;6)