Answer
$$12\sqrt 5$$
Work Step by Step
We can use the product rule for square roots to rewrite the radicand as a product of the greatest perfect square factor and another factor:
$$6(\sqrt 4 \sqrt 5)$$
Because $4$ is a perfect square, we go ahead and simplify the expression by taking the square root of $4$, which is $2$:
$$6(2)(\sqrt 5)$$
We can now multiply the coefficients together:
$$12\sqrt 5$$
