e: \(=\dfrac{-\sqrt{6}\left(1-\sqrt{6}\right)}{1-\sqrt{6}}-4-\sqrt{6}+2\sqrt{6}\)
\(=-\sqrt{6}-4+\sqrt{6}=-4\)
f: \(=\dfrac{2\sqrt{3}\left(\sqrt{3}-1\right)}{-\left(\sqrt{3}-1\right)}-\sqrt{2}-3+\dfrac{-3-\sqrt{3}}{2}\)
\(=-2\sqrt{3}-\sqrt{2}-3+\dfrac{-3}{2}-\dfrac{\sqrt{3}}{2}\)
\(=-\dfrac{5}{2}\sqrt{3}-\sqrt{2}-\dfrac{9}{2}\)
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