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\frac{-6\sqrt{2}\sqrt{5}}{5}\sqrt{\frac{2\times 3+1}{3}}
Multiply 3 and -2 to get -6.
\frac{-6\sqrt{10}}{5}\sqrt{\frac{2\times 3+1}{3}}
To multiply \sqrt{2} and \sqrt{5}, multiply the numbers under the square root.
\frac{-6\sqrt{10}}{5}\sqrt{\frac{6+1}{3}}
Multiply 2 and 3 to get 6.
\frac{-6\sqrt{10}}{5}\sqrt{\frac{7}{3}}
Add 6 and 1 to get 7.
\frac{-6\sqrt{10}}{5}\times \frac{\sqrt{7}}{\sqrt{3}}
Rewrite the square root of the division \sqrt{\frac{7}{3}} as the division of square roots \frac{\sqrt{7}}{\sqrt{3}}.
\frac{-6\sqrt{10}}{5}\times \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{-6\sqrt{10}}{5}\times \frac{\sqrt{7}\sqrt{3}}{3}
The square of \sqrt{3} is 3.
\frac{-6\sqrt{10}}{5}\times \frac{\sqrt{21}}{3}
To multiply \sqrt{7} and \sqrt{3}, multiply the numbers under the square root.
\frac{-6\sqrt{10}\sqrt{21}}{5\times 3}
Multiply \frac{-6\sqrt{10}}{5} times \frac{\sqrt{21}}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{-2\sqrt{10}\sqrt{21}}{5}
Cancel out 3 in both numerator and denominator.
\frac{-2\sqrt{210}}{5}
To multiply \sqrt{10} and \sqrt{21}, multiply the numbers under the square root.