Questão 2463411

\(\sqrt{3\sqrt{81}}=\ 27\)

\(\sqrt[3]{5\ +\sqrt[4]{81\ }}=\ 2\)

\(\frac{2}{\sqrt{5}-\sqrt{3}}\ =\ \sqrt{5}+\ \sqrt{3}\)

\(\sqrt{\sqrt[3]{729}}=\ 3\)

\(\frac{3}{\sqrt[3]{5}}\ =\ \frac{3\sqrt[3]{25}}{5}\)