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If A=[(2,-3),(-4,1)], then adj (3A^(2)+1...

If `A=[(2,-3),(-4,1)]`, then adj `(3A^(2)+12 A)` is equal to

A

`[[72,-63],[-84,51]]`

B

`[[72,-84],[-63,51]]`

C

`[[51,63],[84,72]]`

D

`[[51,84],[63,72]]`

Text Solution

Verified by Experts

The correct Answer is:
C
`because A^(2) = [[2,-3],[-4,1]][[2, -3],[-4, 1]]= [[16,-9],[-12,13]]`
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