Evaluate
2\sqrt{7}\approx 5.291502622
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\sqrt{2}\sqrt{2}\sqrt{7}
Factor 14=2\times 7. Rewrite the square root of the product \sqrt{2\times 7} as the product of square roots \sqrt{2}\sqrt{7}.
2\sqrt{7}
Multiply \sqrt{2} and \sqrt{2} to get 2.
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