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If x^(2) - 3x - 1 = 0, then the value of...

If `x^(2) - 3x - 1 = 0`, then the value of `(x^(2) + 8x - 1)(x^(3) + x^(-1))^(-1)` is

A

3

B

8

C

`3/8`

D

1

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The correct Answer is:
D
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