Evaluate
26\sqrt{5}\approx 58.137767415
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6\times 5\sqrt{5}-4\sqrt{5}
Factor 125=5^{2}\times 5. Rewrite the square root of the product \sqrt{5^{2}\times 5} as the product of square roots \sqrt{5^{2}}\sqrt{5}. Take the square root of 5^{2}.
30\sqrt{5}-4\sqrt{5}
Multiply 6 and 5 to get 30.
26\sqrt{5}
Combine 30\sqrt{5} and -4\sqrt{5} to get 26\sqrt{5}.
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