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If A = [{:(3,1),(-1,2):}] and A^(2) - 5A...

If `A = [{:(3,1),(-1,2):}] and A^(2) - 5A= kI` then `k=.........`

A

`5`

B

`7`

C

`-7`

D

`-5`

Text Solution

Verified by Experts

The correct Answer is:
C
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