Question

Aflati x din inecuatia |2x+1| mai mic sau egal cu 5

Answer 1

|2x+1|$\leq$5 => $-5 \leq 2x+1 \leq 5 |-1 \\ -6 \leq 2x \leq 4 |:2\\ -3 \leq x \leq 2$ => x∈[-3;2]