Evaluate
7\sqrt{15}\approx 27.110883423
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\sqrt{7}\sqrt{7}\sqrt{15}
Factor 105=7\times 15. Rewrite the square root of the product \sqrt{7\times 15} as the product of square roots \sqrt{7}\sqrt{15}.
7\sqrt{15}
Multiply \sqrt{7} and \sqrt{7} to get 7.
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