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If A=[(alpha, 2),(2, alpha)] and |A^(3)|...

If `A=[(alpha, 2),(2, alpha)]` and `|A^(3)|=27` then `alpha` is equal to

A

`pm1`

B

`pm2`

C

`pmsqrt(7)`

D

`pmsqrt(5)`

Text Solution

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The correct Answer is:
C
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