Question

Evaluate:
$\sqrt[3]{729}$

Answer 1

$\sqrt[3]{729}$
By prime factorisation:

729 = $3\times 3\times 3\times 3\times 3\times 3$
= $\left(3\times 3\times 3\right)\times \left(3\times 3\times 3\right)$

∴ $\sqrt[3]{729}$ = $\left(3\times 3\right)=9$