Question

me ajudem preciso de fazer meu dever de casa ​

Answer 1

Oi!

a)
$\sqrt[8]{7^4} = {7}^{\frac{4}{8}} = {7}^{\frac{1}{2}} = \sqrt[2]{7}$
b)
$\sqrt[9]{5^3} = {5}^{\frac{3}{9}} = {5}^{\frac{1}{3}} = \sqrt[3]{5}$
c)
$\sqrt[10]{2^2} = {2}^{\frac{2}{10}} = {2}^{\frac{1}{5}} = \sqrt[5]{2}$
d)
$\sqrt[15]{8^5} = {8}^{\frac{5}{15}} = {8}^{\frac{1}{3}} = \sqrt[3]{8}$