Ihave no idea how to figure this out . any ?

Check out the attached images below for the steps and answers to the various problems.

The rules I'm using are:

sqrt(x^2) = x where x is nonnegative

sqrt(x*y) = sqrt(x)*sqrt(y)

sqrt(x/y) = sqrt(x)/sqrt(y)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.