x^(2/3) · x^(5/3)

\[ x^{\frac{2}{3}}\cdot x^{\frac{5}{3}} =x^{\frac{2}{3}+\frac{5}{3}} =x^{\frac{7}{3}} =x^2\sqrt[3]{x} \]

Ответ: \(x^{\frac{7}{3}}\), или \(x^2\sqrt[3]{x}\).