Question

Solutia in Z* a inecuatiei |x+1| mai mic sau egal cu 3 este...

Answer 1

Bună!

x∈Z*

|x+1|≤3

-3≤x+1≤3/-1 ⇒ -4≤x≤2 ⇒ x∈{-4, -3, -2, -1, 1, 2}

Answer 2

|x+1|≤3

-3≤x+1≤3 /-1

-4≤x≤2

x∈{-4,-3,-2,-1,1,2}