simplifique as potencias com expoentes fracionarios.
a) 6^{4/3} = \sqrt[3]{6^4} = 6^{4/3} = 6^{3/3} = 3^{3} = 9
b) 5^{3/2} = 5^{3/2} = \sqrt{5^3} = 5^{1.5}
c) 3^{5/7}
d) 4^{2/3} = \sqrt[3]{4^2} = \sqrt{(6^2)^2} \cdot \sqrt{5^2} = 5^{1}
e) 4^{3/2} \sqrt{4^5} = \sqrt{2^2}^{3} = \sqrt{2^6} = \sqrt{2^2 \cdot 2^2 \cdot 2^2}
8