Question

Simplify:
i) ${64}^{\frac{1}{3}}$
ii) ${81}^{\frac{3}{4}}$

Answer 1

i) ${64}^{\frac{1}{3}}$ $={\left(4^3\right)}^{\frac{1}{3}}$ $=4$

ii) ${81}^{\frac{3}{4}}$ $={\left(3^4\right)}^{\frac{3}{4}}$ $=3^3$ $=27$