Answer
$$\left\{ {x:2 < x \leqslant 3} \right\}{\text{ or }}\left\{ {x:4 \leqslant x < 5} \right\}$$
Work Step by Step
$$\eqalign{
& \left( {2,3} \right]{\text{or}}\left[ {4,5} \right) \cr
& {\text{Use the interval notations for bounded intervals}}{\text{, }}\left( {page{\text{ 1152}}} \right) \cr
& \left( {a,b} \right] = \left\{ {x:a < x \leqslant b} \right\},{\text{ }}\left[ {a,b} \right) = \left\{ {x:a \leqslant x < b} \right\} \cr
& {\text{Therefore}}{\text{,}} \cr
& \left( {2,3} \right] = \left\{ {x:2 < x \leqslant 3} \right\} \cr
& \left[ {4,5} \right) = \left\{ {x:4 \leqslant x < 5} \right\} \cr
& \left\{ {x:2 < x \leqslant 3} \right\}{\text{ or }}\left\{ {x:4 \leqslant x < 5} \right\} \cr} $$