Evaluate
84\sqrt{5}\approx 187.82971011
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2\times 7\sqrt{6}\sqrt{5}\sqrt{6}
Factor 30=6\times 5. Rewrite the square root of the product \sqrt{6\times 5} as the product of square roots \sqrt{6}\sqrt{5}.
2\times 7\times 6\sqrt{5}
Multiply \sqrt{6} and \sqrt{6} to get 6.
14\times 6\sqrt{5}
Multiply 2 and 7 to get 14.
84\sqrt{5}
Multiply 14 and 6 to get 84.
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