$2X =
\left( \beginarraycc -1 & 4 \4 & 1 \endarray \right) - \left( \beginarraycc 1 & 5 \-3 & 2 \endarray \right)^2 $
$2X =
\left( \beginarraycc -1 & 4 \4 & 1 \endarray \right) - \left( \beginarraycc -14 & 15 \-9 & -11 \endarray \right) $
$2X = (…)