Question

MATRIZES ME AJUDA É URGENTE!!!!!!!!!!

Answer 1

a) $\left[\begin{array}{cc}6&-9\\-3&18\end{array}\right]$

b) $\left[\begin{array}{cc}0&-6\\2&-12\end{array}\right]$

c) $\left[\begin{array}{cc}3&-12\\-6&33\end{array}\right]$