Find \( A=\left[\begin{array}{lll}1 & 2 & 3 \\ 2 & 1 & 4\end{array}\right], \quad B=\left[\begin{array}{ll}1 & 0 \\ 2 & 1 \\ 3 & 2\end{array}\right] \) \( D=\left[\begin{array}{rr}3 & -2 \\ 2 & 4\end{arra