Question

A=$\left \{ X$ apartine R/|3x-2| ≤4inchidem akoloda
A reunit cu N =? Va rog ajutat i ma

Answer 1

-4 ≤ |3x-2| ≤4

-4 ≤ 3x -2 ≤ 4 /+2

-2≤3x≤2 /:3


-2/3 ≤ x ≤2

-0,6 ≤ x ≤2
x∈N            A={0,1,2}

A U N={0,1,2}