Tomamos como el límite
$$\lim_{x \to -1^+}\left(\frac{5 - 2 x}{- 2 x + \left(x^{2} - 4\right)}\right)$$
cambiamos
$$\lim_{x \to -1^+}\left(\frac{5 - 2 x}{- 2 x + \left(x^{2} - 4\right)}\right)$$
=
$$\lim_{x \to -1^+}\left(\frac{5 - 2 x}{x^{2} - 2 x - 4}\right)$$
=
$$\lim_{x \to -1^+}\left(\frac{2 x - 5}{- x^{2} + 2 x + 4}\right) = $$
$$\frac{-5 + \left(-1\right) 2}{\left(-1\right) 2 - \left(-1\right)^{2} + 4} = $$
= -7
Entonces la respuesta definitiva es:
$$\lim_{x \to -1^+}\left(\frac{5 - 2 x}{- 2 x + \left(x^{2} - 4\right)}\right) = -7$$