Chapter 11 - Additional Topics - 11.3 - Fractional Exponents - Problem Set 11.3 - Page 489: 16

4

First of all, remember that raising a number to the ⅓ power is the same as taking the cube root of that number. Also, recall, when a number is raised to the third power, the cube root cancels out the exponent. Thus, we obtain: $\sqrt[3] {64}=\sqrt[3] {4^{3}}=4$