Answer
$\dfrac{3 \sqrt{2}}{2}$
Work Step by Step
Multiply the numerator and the denominator by and dividing by $\sqrt{2}$
$$\frac{3}{\sqrt2}=\frac{3}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}}=\frac{3 \sqrt{2}}{2}$$
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