e: \(=\dfrac{\sqrt{21}\left(\sqrt{7}-\sqrt{3}\right)}{\sqrt{7}-\sqrt{3}}+5+\sqrt{21}-2\sqrt{21}\)
\(=2\sqrt{21}+5-2\sqrt{21}=5\)
g: \(=\dfrac{\sqrt{3}\left(\sqrt{\sqrt{3}+1}+1\right)-\sqrt{3}\left(\sqrt{\sqrt{3}+1}-1\right)}{\sqrt{3}}\)
\(=\sqrt{\sqrt{3}+1}+1-\sqrt{\sqrt{3}+1}+1=2\)
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