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The sum of the values of x so that the ...

The sum of the values of x so that the matrix
`({:(2,2,1),(1,3,1),(1,2,2):})` -x `({:(1,0,0),(0,1,0),(0,0,1):})` is singular, is

A

3

B

5

C

7

D

9

Text Solution

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The correct Answer is:
C
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