Evaluate
26\sqrt{5}\approx 58.137767415
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5\times 3\sqrt{5}+11\sqrt{5}
Factor 45=3^{2}\times 5. Rewrite the square root of the product \sqrt{3^{2}\times 5} as the product of square roots \sqrt{3^{2}}\sqrt{5}. Take the square root of 3^{2}.
15\sqrt{5}+11\sqrt{5}
Multiply 5 and 3 to get 15.
26\sqrt{5}
Combine 15\sqrt{5} and 11\sqrt{5} to get 26\sqrt{5}.
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