\(\left( {\frac{{2 + \sqrt 3 }}{{2 - \sqrt 3 }} + \frac{{2 - \sqrt 3 }}{{2 + \sqrt 3 }} + \frac{{\sqrt 3 - 1}}{{\sqrt 3 + 1}}} \right) \) simplifies to = ?
\(16 - \sqrt 3 \)
\(4 - \sqrt 3 \)
\(2 - \sqrt 3 \)
\(2 + \sqrt 3 \)
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