\[\frac{x² - 2x}{x + 4} = \frac{x - 4}{x + 4}\]
\[ОДЗ:\ \ x + 4 \neq 0\]
\[\ \ \Longrightarrow \ \ \ x \neq - 4\]
\[x^{2} - 2x = x - 4\]
\[x² - 2x - x + 4 = 0\]
\[x^{2} - 3x + 4 = 0\]
\[D = b^{2} - 4ac = 9 - 4 \cdot 4 =\]
\[= 9 - 16 < 0\]
\[Ответ:нет\ корней.\]