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Question
Find the cube-root of −175616
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Solution
−175616
| 2 | 175616 |
| 2 | 87808 |
| 2 | 43904 |
| 2 | 21952 |
| 2 | 10976 |
| 2 | 5488 |
| 2 | 2744 |
| 2 | 1372 |
| 2 | 686 |
| 7 | 343 |
| 7 | 49 |
| 7 | 7 |
| 1 |
= −[(2 × 2 × 2) × (2 × 2 × 2) × (2 × 2 × 2) × (7 × 7 × 7)]
= −[2 × 2 × 2 × 7]
= −56
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