Evaluate
\frac{4\sqrt{10}}{5}\approx 2.529822128
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\frac{8\sqrt{10}}{\left(\sqrt{10}\right)^{2}}
Rationalize the denominator of \frac{8}{\sqrt{10}} by multiplying numerator and denominator by \sqrt{10}.
\frac{8\sqrt{10}}{10}
The square of \sqrt{10} is 10.
\frac{4}{5}\sqrt{10}
Divide 8\sqrt{10} by 10 to get \frac{4}{5}\sqrt{10}.
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