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The expansion of (x + 1 - 1/x)^3 is...

The expansion of `(x + 1 - 1/x)^3` is

A

a) `x^3 + 3x^2 - 5 + 3/x^2 - 1/x^3`

B

b) `x^3 - 3x^2 + 5 - 3/x^2 + 1/x^3`

C

c) `x^3 - 3x^2 - 5 + 3/x^2 + 1/x^3`

D

d) `x^3 + 3x^2 + 5 + 3/x^2 - 1/x^3`

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