Question

urgente atividade em anexo

Answer 1

$-3.\left(\left[\begin{array}{ccc}4&3\\1&5\end{array}\right] -\left[\begin{array}{ccc}-2&-6\\7&0\end{array}\right]\right)=-3.\left[\begin{array}{ccc}6&9\\-6&5\end{array}\right]=\left[\begin{array}{ccc}-18&-27\\18&-15\end{array}\right]$

$-3.\left(\left[\begin{array}{ccc}4&3\\1&5\end{array}\right] +\left[\begin{array}{ccc}-2&-6\\7&0\end{array}\right]\right)=-3.\left[\begin{array}{ccc}2&-3\\8&5\end{array}\right]=\left[\begin{array}{ccc}-6&-9\\-24&-15\end{array}\right]$