\[2\sqrt{5}\ \ и\ \ 3\sqrt{2}\ \]
\[2\sqrt{5} = \sqrt{4 \bullet 5} = \sqrt{20}\]
\[3\sqrt{2} = \sqrt{9 \cdot 2} = \sqrt{18}\]
\[\sqrt{20} > \sqrt{18}\]
\[\Longrightarrow 2\sqrt{5} > 3\sqrt{2}.\]