Questão 2414789

\(\begin{pmatrix} -2 & 5 & 3 \\ 7 & 0 & -4 \\ -1 & -2 & -7 \\ \end{pmatrix}\)

\(\begin{pmatrix} 4 & -10 & -15 \\ -14 & 0 & 8 \\ 2 & 4 & 14 \\ \end{pmatrix}\)

\(\begin{pmatrix} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \\ \end{pmatrix}\)

\(\begin{pmatrix} 2 & -7 & 1 \\ -5 & 0 & 2 \\ -3 & 4 & 7 \\ \end{pmatrix}\)