Question

multiply the following:

Answer 1

Change the order of multiplication. You know, it doesn't matter at all in what order you do that (commutative law).
So first, I would write it as:\[3 \cdot 2 \cdot 6 \cdot x^2 \cdot x^4 \cdot x^8 \cdot \sqrt{2x^4}\cdot \sqrt{19x^5}\]This already looks a lot cleaner.

Try to multiply and simplify the stuff left of the radicals as much as possible, then we'll deal with the square roots...