\[\left\{ \begin{gathered} 2\left( {x - 2} \right) \leqslant 4x\quad \;{\text{Sol:}}\;x \in \left[ { - 2,\infty } \right)\quad \quad \quad \\ {x^2} - x - 2 > 0\quad {\text{Sol:}}x \in \left( { - \infty , - 1} \right) \cup \left( {2,\infty } \right) \\ \end{gathered} \right.\]
\[x \in \left[ { - 2, - 1} \right) \cup \left( {2,\infty } \right)\]