Evaluate
7\sqrt{2}\approx 9.899494937
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\sqrt{7}\sqrt{2}\sqrt{7}
Factor 14=7\times 2. Rewrite the square root of the product \sqrt{7\times 2} as the product of square roots \sqrt{7}\sqrt{2}.
7\sqrt{2}
Multiply \sqrt{7} and \sqrt{7} to get 7.
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