\[\frac{x^{2}}{x - 2} - \frac{x}{2 - x} = \frac{6}{x - 2}\]
\[\frac{x^{2}}{x - 2} + \frac{x}{x - 2} - \frac{6}{x - 2} = 0\]
\[\frac{x^{2} + x - 6}{x - 2} = 0\ \ \ \ \ \ \ \ \ \ \ \ \ \ x \neq 2\]
\[x^{2} + x - 6 = 0\]
\[D = 1^{2} - 4 \cdot 1 \cdot ( - 6) = 1 + 24 =\]
\[= 25\]
\[x_{1} = \frac{- 1 + \sqrt{25}}{2} = \frac{- 1 + 5}{2} = \frac{4}{2} =\]
\[= 2\ (не\ подходит)\]
\[x_{2} = \frac{- 1 - \sqrt{25}}{2} = \frac{- 1 - 5}{2} =\]
\[= \frac{- 6}{2} = - 3\]
\[Ответ:\ - 3.\]