You can put this solution on YOUR website!
There may be several ways to simplify this, but the easiest way is to divide 3 into the 6 and 7 into 14:
If you need additional help with square roots, see my website by clicking on my tutor name "rapaljer" anywhere in algebra.com. On my homepage, look for the link "Basic, Intermediate, and College Algebra: One Step at a Time." Select "Basic Algebra" and look in Chapter 5 for topics on Square Roots. In addition to full explanations, examples, and exercises written so ordinary students can understand them, many of the exercises are solved in my MATH IN LIVING COLOR pages.