\[\begin{array}{l} {\text{Упростите:}} \hfill \\ \sqrt {\frac{{\sqrt[3]{3} - \sqrt[3]{2}}}{{\sqrt[3]{3} + \sqrt[3]{2}}}} + \sqrt {\frac{{\sqrt[3]{3} + \sqrt[3]{2}}}{{\sqrt[3]{3} - \sqrt[3]{2}}}} . \hfill \\ \end{array}\]