Evaluate
7\sqrt{6}\approx 17.146428199
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\sqrt{7}\sqrt{7}\sqrt{6}
Factor 42=7\times 6. Rewrite the square root of the product \sqrt{7\times 6} as the product of square roots \sqrt{7}\sqrt{6}.
7\sqrt{6}
Multiply \sqrt{7} and \sqrt{7} to get 7.
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