Julgue a alternativa:
Item 0 - Se !$ A \, = \, \{ \chi \, \in \, \mathbb{R} \, : \, 3 \chi^2 \, + \, 4\chi \, < \, 4 \} !$ e !$ B \, = \, \{ \chi \, \in \, \mathbb{R} \, : \, 2( \chi^2 \, + \, 1) \, \ge \, 5 \chi\} !$, então !$ A \, \cap \, B \, \subset \, \{ \chi \, \in \, \mathbb{R} \, : \, \chi^2 \, \le \, 4\}. !$
