Resposta:
Explicação passo-a-passo:
A + B = [tex]\left[\begin{array}{ccc}-1&2\\0&-2 \\2&-3\end{array}\right] + \left[\begin{array}{ccc}1&2\\2&3 \\0&-1\end{array}\right] = \left[\begin{array}{ccc}0&4\\2&1 \\2&-4\end{array}\right][/tex]
A - B = [tex]\left[\begin{array}{ccc}-1&2\\0&-2 \\2&-3\end{array}\right] - \left[\begin{array}{ccc}1&2\\2&3 \\0&-1\end{array}\right] = \left[\begin{array}{ccc} -2&0\\-2&- 5 \\2&-2\end{array}\right][/tex]
