Evaluate
\frac{18\sqrt{5}}{5}\approx 8.049844719
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\frac{13}{5}\sqrt{5}+\sqrt{5}
Combine \frac{8}{5}\sqrt{5} and \sqrt{5} to get \frac{13}{5}\sqrt{5}.
\frac{18}{5}\sqrt{5}
Combine \frac{13}{5}\sqrt{5} and \sqrt{5} to get \frac{18}{5}\sqrt{5}.
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