Matrices And Determinants

If $$A=\left[\begin{array}{ll}1 & 0 \\ 2 & 1\end{array}\right], B=\left[\begin{array}{ll}1 & 3 \\ 0 & 1\end{array}\right]$$, then \(\operatorname{det}\left(A^6+B^6\right)=\)