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If A=[3 1-1 2], show that A^2-5A+7I=0...

If `A=[3 1-1 2]`, show that `A^2-5A+7I=0`

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If A=[3112], show that A^(2)-5A+7I=0 Hence find A^(-1) .

If A=[31-12], 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^2=O .

If A=[[3, 1],[-1 ,2]] , show that A^2-5A+7I=O . Use this to find A^4

If A = [[3,1],[-1,2]] , show that A^2-5A +7I = O

If A=[(3, 1),( 1, 2)] , show that A^2-5A+5I=0 . Hence, find A^(-1) .

Let A=[[3,1],[-1,2]] Show that A^2-5A+7I=0

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

If A=[[3,1],[-1,2]] prove that A^2-5A+7I=O ,where I is unit matrix of order 2.