if x=(sqrt2 + 1 ) ^(-1//3), then the val...

if `x=(sqrt2 + 1 ) ^(-1//3)`, then the value of `(x^3 - frac(1) (x^3))` is
(A) 0 (B) `-sqrt2` (C ) -2 (D) `3sqrt2`

A

B

C

D

A

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