Question

pra agora me ajudem ​

Answer 1

$A≔\left(\begin{matrix}3&7\\3&0\end{matrix}\right)$

$B≔\left(\begin{matrix}17&18\\-21&19\end{matrix}\right)$

$C≔\left(\begin{matrix}4&0&-9\\-6&-6&11\\4&2&-1\end{matrix}\right)$

$D≔\left(\begin{matrix}9&-14\\7&-3\end{matrix}\right)$