\[\left| x^{2} - x - 3 \right| < 9\]
\[\left\{ \begin{matrix} x^{2} - x - 3 > - 9 \\ x^{2} - x - 3 < 9\ \ \ \\ \end{matrix}\text{\ \ \ \ \ \ \ \ \ \ } \right.\ \]
\[\left\{ \begin{matrix} x^{2} - x + 6 > 0\ \\ x^{2} - x - 12 < 0 \\ \end{matrix} \right.\ \]