Answer
$2\sqrt 6$
Work Step by Step
$\sqrt 3\times\sqrt 8=\sqrt 3\times\sqrt (4\times2)=\sqrt 3\times\sqrt 4\times\sqrt 2=\sqrt 4\times\sqrt (3\times2)=2\sqrt 6$
We know that $\sqrt 4=2$, because $2^{2}=4$.
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