If A =((4,22),(-1,-6)), then find A +A...

If `A =((4,22),(-1,-6))`, then find `A +A^-1.`

A

`[{:(8, -11), (-1, -6):}]`

B

`[{:(7, 33), ((1)/(2), -4):}]`

C

`[{:(7, 33), (-(3)/(2), -8):}]`

D

`[{:(7, 33), (-(3)/(2), -4):}]`

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The correct Answer is:

C

`A^(-1) = (1)/(ad-bc)[{:(d, -b), (-c, a):}]`

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