Evaluate
\sqrt{5}\left(5\sqrt{13}+12\right)\approx 67.144104471
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12\sqrt{5}+\sqrt{1625}
Factor 720=12^{2}\times 5. Rewrite the square root of the product \sqrt{12^{2}\times 5} as the product of square roots \sqrt{12^{2}}\sqrt{5}. Take the square root of 12^{2}.
12\sqrt{5}+5\sqrt{65}
Factor 1625=5^{2}\times 65. Rewrite the square root of the product \sqrt{5^{2}\times 65} as the product of square roots \sqrt{5^{2}}\sqrt{65}. Take the square root of 5^{2}.
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