If$ x^{\frac{1}{4}} + x^{-\frac{1}{4}}$ = 2, then what is the value of $x^{81} + \left(\frac{1}{x^{81}}\right)$?

If$ x^{\frac{1}{4}} + x^{-\frac{1}{4}}$ = 2, then what is the value of $x^{81} + \left(\frac{1}{x^{81}}\right)$?
1). -2
2). 0
3). 1
4). 2

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