Patratele perfecte: 289, 196, 3136, 48841, [tex] 2^{6} * 5^{2} [/tex]
[tex] \sqrt{289} = \sqrt{ 17^{2} } =17[/tex]
[tex] \sqrt{196} = \sqrt{ 14^{2} } =14[/tex]
[tex] \sqrt{3136} = \sqrt{ 56^{2} } =56[/tex]
[tex] \sqrt{48841} = \sqrt{ 221^{2} } =221[/tex]
[tex] 2^{6} * 5^{2} =64*25=1600[/tex]
[tex] \sqrt{1600} = \sqrt{ 40^{2} } =40[/tex]
