Rationalize the denominator: 193+33\frac{1}{\sqrt[3]{9} + \sqrt[3]{3}}39+331
93−336\frac{\sqrt[3]{9} - \sqrt[3]{3}}{6}639−33
33−936\frac{\sqrt[3]{3} - \sqrt[3]{9}}{6}633−39
813−36\frac{\sqrt[3]{81} - 3}{6}6381−3
33(33−1)6\frac{\sqrt[3]{3}(\sqrt[3]{3} - 1)}{6}633(33−1)