Question

Gasiti numere a pentru care radical din a are primele doua zecimale 1 si 6 ,in aceasta ordine.

Answer 1

$\sqrt{a}=\overline{b,16....}$

$0,16^{2}=0,0256$

$0,17^{2}=0,0289$

..........................................................

$\overline{b,16}^{2}<a<\overline{b,17}^{2}$

a$\in$ ( $\overline{b,16}^{2}; \overline{b,17}^{2}$); b $\in$ |N

De ex: a=0,0257