(4−354)\left(\begin{array}{rr}4 & -3 \\5 & 4\end{array}\right)(45−34)
(−716−37)\left(\begin{array}{rr}-7 & 16 \\-3 & 7\end{array}\right)(−7−3167)
(6−576)\left(\begin{array}{rr}6 & -5 \\7 & 6\end{array}\right)(67−56)
(453−1)\left(\begin{array}{rr}4 & 5 \\3 & -1\end{array}\right)(435−1)
