You start of finding the common divisors and that begins with 2 because 2 is the first number (other than 1) that goes into both 24 and 32. Another multiple is 4 because 4x6 = 24 and 4x8=32. Here is the complete list 2,4,8. Hope this helps and have a good night!
The problem statement tells you how to do it: take the square root, then the square root of that, using the square root function twice and making the result of one the argument of the other.
