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प्रश्न
Find the cube-root of -2197.
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उत्तर
-2197
= `root(3)(-2197)`
| 13 | 2197 |
| 13 | 169 |
| 13 | 13 |
| 1 |
= `root(3)(-13 xx -13 xx -13)`
= -13
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