\(\mathop {\lim }\limits_{x \to  - \infty } \frac{...

C

- Hướng dẫn giải

\(\mathop {\lim }\limits_{x \to \infty } \frac{{ - x - 3}}{{x + 2}} = \mathop {\lim }\limits_{x \to \infty } \frac{{ - 1 - \frac{3}{x}}}{{1 + \frac{2}{x}}} =  - 1.\)