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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`= _______

A

`+-1`

B

`+-2`

C

`+- sqrt7`

D

`+- sqrt5`

Text Solution

Verified by Experts

The correct Answer is:
C
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