Resposta:

Explicação passo a passo:

2    3            3    2

5    4            5    2

[tex]\left[\begin{array}{cc}2&3\\5&4\end{array}\right] .\left[\begin{array}{cc}3&2\\5&2\end{array}\right] =\left[\begin{array}{cc}2*3+3*5&2*2+3*2\\5*3+4*5&5*2+4*2\end{array}\right] \\\\\\\left[\begin{array}{cc}2&3\\5&4\end{array}\right] .\left[\begin{array}{cc}3&2\\5&2\end{array}\right]=\left[\begin{array}{cc}6+15&4+6\\15+20&10+8\end{array}\right]\\\\\\\left[\begin{array}{cc}2&3\\5&4\end{array}\right] .\left[\begin{array}{cc}3&2\\5&2\end{array}\right]=\left[\begin{array}{cc}21&10\\35&18\end{array}\right][/tex]