Questão 2623192

\(\begin{bmatrix} 1 & 2 & -1 \\ 0 & 6 & 6 \\ 3 & 9 & 2 \\ \end{bmatrix}\)

\(\begin{bmatrix} 0 & 2 & -1 \\ 0 & 6 & 4 \\ 3 & 0 & 2 \\ \end{bmatrix}\)

\(\begin{bmatrix} 2 & 4 & 10 \\ 3 & -6 & 1 \\ 1 & 2 & 5 \\ \end{bmatrix}\)

\(\begin{bmatrix} 1 & 2 & 0 \\ 0 & 1 & 2 \\ 0 & 3 & 2 \\ \end{bmatrix}\)