Question

determinati numerele x cu proprietatea ca | x+2| <3

Answer 1

-3<x+2<3  |-2
-5<x<1
x∈Z
S={-4;-3;-2;0}

Answer 2

| x+2 | < 3
Aici intalnim 2 cazuri
cazul 1
x+2<-3
x<-3-2
x<-5
=> x = {.......,-6}
cazul 2
x+2<3
x<3-2
x<1
=> x = { ........-1,0 }