\[\sqrt{23} + \sqrt{6}\ \ \ и\ \ \ \sqrt{22} + \sqrt{7}\]
\[\left( \sqrt{23} + \sqrt{6} \right)^{2} =\]
\[= \sqrt{23} + 2\sqrt{138} + 6 =\]
\[= 29 + 2\sqrt{138}\]
\[\left( \sqrt{22} + \sqrt{7} \right)^{2} =\]
\[= 22 + 2\sqrt{154} + 7 =\]
\[= 29 + 2\sqrt{154}\]
\[29 + 2\sqrt{138} < 29 + 2\sqrt{154}\]
\[\Longrightarrow \sqrt{23} + \sqrt{6} < \sqrt{22} + \sqrt{7}.\]