Answer
$3\sqrt2$
Work Step by Step
Rationalize the denominator by multiplying $\sqrt2$ to both the numerator and the denominator:
$=\dfrac{6 \cdot \sqrt2}{\sqrt2 \cdot \sqrt2}
\\=\dfrac{6\sqrt2}{2}$
Simplify by canceling common factors:
$\require{cancel}
\\=\dfrac{\cancel{6}3\sqrt2}{\cancel{2}}
\\=3\sqrt2$
