مجموعه جواب نامعادلهٔ $\frac{{ - 5x}}{2} \geqslant {(3x + 1)^2} - (3x + 4)(3x - 4)$ کدام است؟
1 )
$\left\{ {x \in \mathbb{R}\left| {x \geqslant - 2} \right.} \right\}$
$\left\{ {x \in \mathbb{R}\left| {x \leqslant - 2} \right.} \right\}$
3 )
$\left\{ {x \in \mathbb{R}\left| {x \geqslant 2} \right.} \right\}$
4 )
$\left\{ {x \in \mathbb{R}\left| {x \leqslant 2} \right.} \right\}$