\[y = 0\ \ \ и\ \ \ y = \frac{x^{2} - 2x - 8}{x - 4}\]
\[\frac{x^{2} - 2x - 8}{x - 4} = 0\]
\[ОДЗ:\ \ \ x \neq 4\]
\[x² - 2x - 8 = 0\]
\[D = b^{2} - 4ac =\]
\[= 4 - 4 \cdot 1 \cdot ( - 8) = 36\]
\[x_{1} = \frac{2 + 6}{2} = \frac{8}{2} =\]
\[= 4\ \ (не\ подходит\ по\ ОДЗ)\]
\[x_{2} = \frac{2 - 6}{2} = - \frac{4}{2} = - 2\]
\[Ответ:\ ( - 2;0).\]