\[(x + 6) \cdot (x - 3) = 0\]
\[x + 6 = 0\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x - 3 = 0\]
\[x = - 6\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = 3\]
\[Ответ:\ - 6;3.\]