Evaluate the limit $LaTeX: \displaystyle \lim_{x \to -3}\frac{2 x^{2} - 12 x - 54}{- 2 x^{2} - 3 x + 9}$

The limit is an indeterminate form of the type $LaTeX: \displaystyle \frac{0}{0}$ . Using L'Hospitial's rule and then the evaluation theorem gives: $LaTeX: \lim_{x \to -3}\frac{2 x^{2} - 12 x - 54}{- 2 x^{2} - 3 x + 9} = \lim_{x \to -3}\frac{4 x - 12}{- 4 x - 3} = \frac{4 (-3) - 12}{- 4 (-3) - 3} = - \frac{8}{3}$