Cube Root of 729
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What is the cube root of 729?
Answer
∛729 =
9
Real cube root: the only number whose cube is 729.
- Prime factors
- 729 = (3 × 3 × 3) × (3 × 3 × 3) = 3⁶
- Take out of the root
- ∛729 = ∛((3³)²) = 3² = 9
- Check
- 9 × 9 × 9 = 729 ✓
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