Question

Preciso de Ajuda Nesse Dever
Qualquer Ajuda é Bem Vinda

Answer 1

Resposta:

1- $\left[\begin{array}{ccc}-1&-4&-7\\1&-2&-5\\3&0&-3\end{array}\right]$

2- a) $\left[\begin{array}{ccc}1&14\\5&-16\end{array}\right]$

   b) $\left[\begin{array}{ccc}5&0\\-12&-2\end{array}\right]$

3- a) $\left[\begin{array}{ccc}2&5\\0&-3\end{array}\right]$

   b) $\left[\begin{array}{ccc}92&60\\104&64\end{array}\right]$

4- $\left[\begin{array}{ccc}2&-1\\-5&3\end{array}\right]$