Answer
$\frac{2\sqrt 5}{5}$
Work Step by Step
$\frac{2}{\sqrt 5}\times\frac{\sqrt 5}{\sqrt 5}$
=$\frac{2\times\sqrt 5}{\sqrt 5 \times \sqrt 5}$
=$\frac{2\sqrt 5}{(\sqrt 5)^{2}}$
=$\frac{2\sqrt 5}{5}$
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