x+1/x+2≤0
3x+1/x≤0
x=0
(3x+1)=0
3x=-1
x=-1/3
x≤-1/3
-1/3≤x≤0
x≥0
x≤-1/3 falsa
-1/3≤x≤0 adevara
x≥0 falsa
--------(-7.5-------(-5------(-2.5-----°0------2.5------5-------7.5-- graficul