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Trial and error. You know that the answer will be between 2 and 3, closer to 3.

2.8 squared = 7.84

2.82 squared = 7.95

2.828 squared = 7.99

2.8284 squared = 7.999 which is close enough for me.

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11y ago

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Q: How do you work out the square root of 8?
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