Evaluate
\frac{2\sqrt{7}}{7}\approx 0.755928946
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\frac{2\sqrt{7}}{\left(\sqrt{7}\right)^{2}}
Rationalize the denominator of \frac{2}{\sqrt{7}} by multiplying numerator and denominator by \sqrt{7}.
\frac{2\sqrt{7}}{7}
The square of \sqrt{7} is 7.
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