\[(a + 2)x \geq a + 2\]
\[x \geq \frac{a + 2}{a + 2}\]
\[a = - 2 \Longrightarrow ( - \infty; + \infty)\]
\[a < - 2 \Longrightarrow x \leq 1\]
\[a > - 2 \Longrightarrow x \geq 1\]