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If B=[{:(5,2alpha,1),(0,2,1),(alpha,3,-1...

If `B=[{:(5,2alpha,1),(0,2,1),(alpha,3,-1):}]` is the inverse of a `3xx3` matrix A, then the sum of all values of `alpha` for which det `(A)+1=0` is:

A

0

B

`-1`

C

1

D

2

Text Solution

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The correct Answer is:
C
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