(3−458)\left(\begin{array}{cc}3 & -4 \\5 & 8\end{array}\right)(35−48)
(−3485)\left(\begin{array}{ll}-3 & 4 \\8 & 5\end{array}\right)(−3845)
(3−48−5)\left(\begin{array}{ll}3 & -4 \\8 & -5\end{array}\right)(38−4−5)
(−3−485)\left(\begin{array}{cc}-3 & -4 \\8 & 5\end{array}\right)(−38−45)