6sqrt2 is the simplest form of what?

1 Answer
Oct 13, 2015

sqrt(72)

Explanation:

You're asked to determine what radical term can be simplified to give 6sqrt(2).

This means that you have to reverse the process you use when trying to get radical terms to their most simple form.

So, you start with 6sqrt(2). Take a look at 6, is it a perfect square by any chance?

In this case, it is. you know that

6 = sqrt(6^2) = sqrt(36)

This means that you can write

6sqrt(2) = sqrt(36) * sqrt(2)

You know that

color(blue)(sqrt(a) * sqrt(b) = sqrt(a * b))

which means that you have

6sqrt(2) = sqrt(36) * sqrt(2) = sqrt(36 * 2) = color(green)(sqrt(72))