Explicație pas cu pas:
[tex] {1}^{2} = 1 \\ {2}^{2} = 4 \\ {3}^{2} = 9 \\ {7}^{2} = 49 \\ {6}^{2} = 36[/tex]
[tex] \sqrt{ \frac{ {1}^{2} }{ {2}^{2} } } + \sqrt{ \frac{ {1}^{2} }{ {3}^{2} } } + \sqrt{ \frac{ {7}^{2} }{ {6}^{2} } } [/tex]
[tex] \frac{1}{2} + \frac{1}{3} + \frac{7}{6} [/tex]
[tex] \frac{3}{6} + \frac{2}{6} + \frac{7}{6} [/tex]
[tex] \frac{3 + 2 + 7}{6} [/tex]
[tex] \frac{12}{6} [/tex]
[tex] = 2[/tex]