Bună!
[tex]\frac{5}{\sqrt{5} } =\frac{5\sqrt{5} }{5} =\sqrt{5} \\\frac{1}{\sqrt{3} } =\frac{\sqrt{3} }{3} \\\frac{6}{5\sqrt{2} } =\frac{6\sqrt{2} }{10} =\frac{3\sqrt{2} }{5} \\\frac{5}{4\sqrt{3} }=\frac{5\sqrt{3} }{12}[/tex]