Question

qual e a resposta 3 /3√7

Answer 1

$\frac{3}{3\sqrt{7}}$

Simplificando

$\frac{1}{\sqrt{7}}$

Racionalizando

$\frac{1}{\sqrt{7}}.\frac{\sqrt{7}}{\sqrt{7}}$

$\frac{\sqrt{7}}{7}$

Answer 2

Vamos lá :

$\dfrac{3}{3\sqrt{7}} = \dfrac{1}{\sqrt{7}} * \dfrac{\sqrt{7}}{\sqrt{7}} = \dfrac{\sqrt{7}}{(\sqrt{7})^{2}} = \dfrac{\sqrt{7}}{7}$

Espero ter ajudado !!! ;-)