Chapter 3.1, Problem 24E

In Problems 15-28, perform the operations if possible.

$A=\left[\begin{array}{ccc}1& 0& -2\\ 3& 2& 1\\ 4& 0& 3\end{array}\right]B=\left[\begin{array}{cccc}1& 1& 3& 0\\ 4& 2& 1& 1\\ 3& 2& 0& 1\end{array}\right]C=\left[\begin{array}{cc}5& 3\\ 1& 2\end{array}\right]$

$D=\left[\begin{array}{cc}4& 2\\ 3& 5\end{array}\right]E=\left[\begin{array}{ccc}1& 0& 4\\ 5& 1& 0\end{array}\right]F=\left[\begin{array}{ccc}1& 2& 3\\ -1& 0& 1\\ 2& -3& -4\end{array}\right]$

$G=\left[\begin{array}{ccc}2& 1& 1\\ 1& 0& 4\\ 5& 1& 0\end{array}\right]Z=\left[\begin{array}{ccc}0& 0& 0\\ 0& 0& 0\\ 0& 0& 0\end{array}\right]$

$4D$.