Calculate the sum A+BA + BA+B where A=(1234)A = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}A=(1324) and B=(0110)B = \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix}B=(0110).
(1344)\begin{pmatrix} 1 & 3 \\ 4 & 4 \end{pmatrix}(1434)
(1234)\begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}(1324)
(2345)\begin{pmatrix} 2 & 3 \\ 4 & 5 \end{pmatrix}(2435)
(0230)\begin{pmatrix} 0 & 2 \\ 3 & 0 \end{pmatrix}(0320)