\[\frac{5x^{2} - 9x - 2}{x^{2} - 4}\]
\[x^{2} - 4 \neq 0\]
\[x^{2} \neq 4\]
\[x \neq \pm 2.\]
\[5x^{2} - 9x - 2 = 0\]
\[D = 81 + 40 = 121\]
\[x_{1} = \frac{9 + 11}{10} = 2\ (не\ подходит);\]
\[x_{2} = \frac{9 - 11}{10} = - \frac{2}{10} = - 0,2\]
\[Ответ:при\ x = - 0,2.\]