Question

me ajudemm!!preciso resolver isso hj​

Answer 1

B) 0

Explicação passo-a-passo:

$\large\boxed{\begin{array}{lr}\begin{bmatrix} 1&3&1 \\ 2&2&0 \\ 0&4&2\end{bmatrix} \\ \\ \begin{bmatrix}1 &3&1 \\ 2&2&0 \\ 0&4&2\end{bmatrix} \\ \\ 1 \times \begin{bmatrix} 2&0 \\ 4&2\end{bmatrix} - 2 \times \begin{bmatrix} 3&1 \\ 4&2 \end{bmatrix} + 0 \times \begin{bmatrix} 3&1 \\ 2&0\end{bmatrix} \\ \\ 4 - 2 \times 2 + 0 \\ \\ 4 - 4 \\ \\ \boxed{0}\end{array}}$