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Show that thematrix A=[{:(,2,3),(,1,2):}...

Show that thematrix A=`[{:(,2,3),(,1,2):}]` satisfies the equations `A^(2)-4A+I=0` where I is `2 xx 2` identity matrix and O is `2 xx 2` zero matrix. Using the equations. Find `A^(-1)`.

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x = -14,-2
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