2/√5

The expression \( \frac{2}{\sqrt{5}} \) can be rationalized by multiplying the numerator and the denominator by \( \sqrt{5} \):

\[ \frac{2}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} = \frac{2\sqrt{5}}{5} \]

So, \( \frac{2}{\sqrt{5}} \) can be expressed as \( \frac{2\sqrt{5}}{5} \) when rationalized.

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