Question

Vou postar separadamente, 8) aq

Answer 1

a.

$\sqrt{8}=\sqrt{4\cdot2}=\sqrt{4}\cdot\sqrt{2}=2\sqrt{2}$

b.

$\sqrt{20}=\sqrt{4\cdot5}=\sqrt{4}\cdot\sqrt{5}=2\sqrt{5}$

c.

$\sqrt{63}=\sqrt{9\cdot7}=\sqrt{9}\cdot\sqrt{7}=3\sqrt{7}$

d.

$\sqrt{121}=\sqrt{11^2}=11$

e.

$\sqrt{36}=\sqrt{6^2}=6$

f.

$\sqrt[3]{729}=\sqrt[3]{9^3}=9$