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$[\begin{array}{c} 1 & - 3 & 2 \\ 4 & - 6 & - 8 \end{array}]$

Bước 1

Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} 1 & 4 \\ - 3 & - 6 \\ 2 & - 8 \end{array}]$