Evaluate
\frac{\sqrt{21}}{3}\approx 1.527525232
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\frac{\sqrt{7}\sqrt{3}}{\left(\sqrt{3}\right)^{2}}
Rationalize the denominator of \frac{\sqrt{7}}{\sqrt{3}} by multiplying numerator and denominator by \sqrt{3}.
\frac{\sqrt{7}\sqrt{3}}{3}
The square of \sqrt{3} is 3.
\frac{\sqrt{21}}{3}
To multiply \sqrt{7} and \sqrt{3}, multiply the numbers under the square root.
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