$15\mathrm{.}20$ Given the following matrices:

$[A]=\left[\begin{array}{ccc}2& 10& 0\\ 16& 6& 14\\ 12& -4& 18\end{array}\right]$ and $[B]=\left[\begin{array}{ccc}2& 10& 0\\ 4& 20& 0\\ 12& -4& 18\end{array}\right]$

calculate the determinant of A and $B$ using MATLAB.