Answer
$\sqrt 6x$
Work Step by Step
The product rule holds that $\sqrt[n] a\times\sqrt[n] b=\sqrt[n] (ab)$ (where $\sqrt[n] a$ and $\sqrt[n] b$ are real numbers).
Therefore, $\sqrt 2\times\sqrt 3x=\sqrt (2\times3x)=\sqrt 6x$
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