Question:
Evaluate:
$\sqrt[3]{729}$
Solution:
$\sqrt[3]{729}$
By prime factorisation:
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$729=3 \times 3 \times 3 \times 3 \times 3 \times 3$
$=(3 \times 3 \times 3) \times(3 \times 3 \times 3)$
$\therefore \sqrt[3]{729}=(3 \times 3)=9$
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