If A=2312, verify that A2-4A+I=O, where I=1001 and O=0000. Hence find <math xmlns="http://www.w3.org/19

If $A = [\begin{matrix} 2 & 3 \\ 1 & 2 \end{matrix}]$ , verify that $A^{2} - 4 A + I = O$ , where $I = [\begin{matrix} 1 & 0 \\ 0 & 1 \end{matrix}] a n d O = [\begin{matrix} 0 & 0 \\ 0 & 0 \end{matrix}]$ . Hence find <math xmlns="http://www.w3.org/19

Match the items on the right to the items on the left.