Given A=[18864]\displaystyle {A}={\left[\begin{array}{cc} {1}&{8}\\{8}&{64}\end{array}\right]} , find A1\displaystyle {A}^{{-{1}}} . If A1\displaystyle {A}^{{-{1}}} does not exist, write "DNE" in each box.

   

   

Hint 1