\[(x + 2)(x - 2) - x(x - 6) = 0\]
\[x^{2} - 4 - x^{2} + 6x = 0\]
\[6x = 4\]
\[x = \frac{4}{6} = \frac{2}{3}\]
\[Ответ:x = \frac{2}{3}.\]