\[ \left( \frac{1 - \sqrt{5}}{1 + \sqrt{5}} \right) \left( \frac{5 - \sqrt{5}}{1 - \sqrt{5}} - 1 \right) \]

\[
\left( \frac{1 - \sqrt{5}}{1 + \sqrt{5}} \right) \left( \frac{5 - \sqrt{5}}{1 - \sqrt{5}} - 1 \right)
\]