If A = [[x,1,-x],[0,1,-1],[x,0,7]] and d...

If `A = [[x,1,-x],[0,1,-1],[x,0,7]]` and det `(A) = |(3,0,1),(2,-1,0),(0,6,7)|`, then the value of x is a)-3 b)3 c)2 d)-8

A

`-3`

B

3

C

2

D

`-8`

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The correct Answer is:

A

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