Explicație pas cu pas:
[tex]2.(1) = 2 \frac{1}{9} = \frac{19}{9} [/tex]
[tex]2.(2) = 2 \frac{2}{9} = \frac{20}{9} [/tex]
[tex]2.(3) = 2 \frac{3}{9} = \frac{21}{9} [/tex]
................
[tex]2.(8) = 2 \frac{8}{9} = \frac{26}{9} [/tex]
[tex]19 \div \frac{19}{9} = 19 \times \frac{9}{19} = 9[/tex]
[tex]x = \sqrt{9} + \sqrt{9 } + \sqrt{9} + ... + \sqrt{9} \: \: 8 \: termeni[/tex]
[tex]x = 3 \times 8 = 24 \: numar \: natural[/tex]
