Ushtrimi 4

Kthe emëruesin në numër racional. a) $\frac{3}{\sqrt{5}}$ b) $\frac{2}{\sqrt{6}}$ c) $\frac{2}{\sqrt{8}}$ d) $\frac{21}{\sqrt{7}}$ e) $\frac{1+\sqrt{3}}{\sqrt{12}}$ f) $\frac{\sqrt{18}+10}{\sqrt{2}}$