Hei! :)
[tex]13, 10\sqrt{2} , 7\sqrt{3} , 5\sqrt{6} \\\\=> 13=\sqrt{13^{2} } =\sqrt{169} \\=> 10\sqrt{2} =\sqrt{10^{2} *(\sqrt{2})^{2} } =\sqrt{100*2} =\sqrt{200} \\=> 7\sqrt{3}=\sqrt{7^{2} *(\sqrt{3})^{2} } =\sqrt{49*3} =\sqrt{147} \\=> 5\sqrt{6}=\sqrt{5^{2} *(\sqrt{6})^{2} } =\sqrt{25*6} =\sqrt{150} \\\\=> Cel\ mai\ mare\ numar\ este\ 10\sqrt{2}[/tex]
