Question

as divisões em raiz quadrada
me ajudem pfv​

Answer 1

Explicação passo-a-passo:

a)

$\sf \dfrac{\sqrt{15}}{\sqrt{3}}=\dfrac{\sqrt{3}\cdot\sqrt{5}}{\sqrt{3}}=\sqrt{5}$

b)

$\sf \dfrac{\sqrt[4]{21}}{\sqrt[4]{7}}=\dfrac{\sqrt[4]{7}\cdot\sqrt[4]{3}}{\sqrt[4]{7}}=\sqrt[4]{3}$

c)

$\sf \dfrac{\sqrt{162}}{\sqrt{3}}=\dfrac{\sqrt{3}\cdot\sqrt{54}}{\sqrt{3}}=\sqrt{54}=3\sqrt{6}$

d)

$\sf \dfrac{\sqrt{240}}{\sqrt{6}}=\dfrac{\sqrt{6}\cdot\sqrt{40}}{\sqrt{6}}=\sqrt{40}=2\sqrt{10}$

e)

$\sf \dfrac{\sqrt{90}}{\sqrt{5}}=\dfrac{\sqrt{5}\cdot\sqrt{18}}{\sqrt{5}}=\sqrt{18}=3\sqrt{2}$