\[\frac{x^{2}}{2 - x} = \frac{3x}{2 - x}\]
\[ОДЗ:\ \ 2 - x \neq 0\]
\[\ \ \ \ \ \ \ \ \ \ \ x \neq 2\]
\[x² = 3x\]
\[x² - 3x = 0\]
\[x(x - 3) = 0\]
\[x = 0\ \ \ \ \ \ \ \ x - 3 = 0\]
\[\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = 3\]
\[Ответ:x = 0\ \ и\ \ x = 3.\]