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if A=[{:(3,1),(-1,2):}],show that A^(2)...

`if A=[{:(3,1),(-1,2):}],`show that `A^(2)-5A+7I=0.`

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If A=[{:(3,1),(-1,2):}] , show that A^(2)-5A+7I=O .

If A=[{:(3,1),(-1,2):}] , show that A^(2)-5A+7I=O . Hence, find A^(-1) .

If A={:((3,1),(-1,2)):} show that A^(2)-5A+7I_(2)=0

If A=[{:(3,1),(-1,2):}] show that A^2-5A+7I=O . Hence find A^(-1)

If A= {:[( 3,1),( -1,2) ]:} Show that A^(2) -5A +7I =O.Hence find A^(-1)

If A= {:[( 3,1),( -1,2) ]:} Show that A^(2) -5A +7I =O.Hence find A^(-1)