Evaluate
7\sqrt{5}\approx 15.652475842
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\sqrt{7}\sqrt{7}\sqrt{5}
Factor 35=7\times 5. Rewrite the square root of the product \sqrt{7\times 5} as the product of square roots \sqrt{7}\sqrt{5}.
7\sqrt{5}
Multiply \sqrt{7} and \sqrt{7} to get 7.
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