Given the sets A\displaystyle {A} and B\displaystyle {B} expressed in interval notation, find AB\displaystyle {A}\cap{B}.

A=(,2)(8,+)\displaystyle {A}={\left(-\infty,-{2}\right)}\cup{\left({8},+\infty\right)} 

B=[84,78]\displaystyle {B}={\left[-{84},{78}\right]} \displaystyle  

 AB=\displaystyle {A}\cap{B}=