Evaluate
\frac{2}{5}=0.4
Factor
\frac{2}{5} = 0.4
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\left(\frac{1}{5}\right)^{2}\left(\sqrt{10}\right)^{2}
Expand \left(\frac{1}{5}\sqrt{10}\right)^{2}.
\frac{1}{25}\left(\sqrt{10}\right)^{2}
Calculate \frac{1}{5} to the power of 2 and get \frac{1}{25}.
\frac{1}{25}\times 10
The square of \sqrt{10} is 10.
\frac{2}{5}
Multiply \frac{1}{25} and 10 to get \frac{2}{5}.
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