Question

22. Evaluate the square root of xy when x=15 and y=15.

square root of 15(15)
=
square root of 225
=
15

?

Answer 1

I am not certain of your question.

If the question is

what is the sqrt(15*15), then the answer is indeed 15.
sqrt (a*a)= a

Answer 2

yes, that's what it is.

Thanks