(1) Escreva cada item a seguir na forma de radical. a) 8^5=sqrt [5](8)= b) (-4)^(5)/(7)=underline ( ) c) 3^(2)/(4)=underline ( ) d) 6^(4)/(3)=underline ( ) (-12)^(2)/(3)=underline ( )

a) $$8^{5}=\sqrt [5]{8}=8$$
b) $$(-4)^{\frac {5}{7}}=\sqrt [7]{(-4)^{5}}=-\sqrt [7]{1024}$$
c) $$3^{\frac {2}{4}}=\sqrt [4]{3^{2}}=\sqrt [4]{9}$$
d) $$6^{\frac {4}{3}}=\sqrt [3]{6^{4}}=\sqrt [3]{1296}$$
e) $$(-12)^{\frac {2}{3}}=\sqrt [3]{(-12)^{2}}=\sqrt [3]{144}$$