Răspuns:
[tex] \sqrt{18} = \sqrt{9 \times 2} = 3 \sqrt{2} [/tex]
Sautare!
Descompunem numarul 18 in factori primi
18 | 2
9 | 3
3 | 3
1 | 1 ⇒ 18 = 2 · 3²
[tex]\bf \sqrt{18}=\sqrt{9\cdot 2} = \sqrt{3^{2} \cdot 2} =\boxed{\bf 3\sqrt{2}}[/tex]
==pav38==
