Funny username, I doubt its true though....
The way to solve this one is to look at each answer choice and see if there is an integer, x, where x^2 equals each and every answer choice--or see if you get an integer when taking the square root.
A. all those roots make the simplified choice = 1 and the square root of that is 1
B. This answer choice is meant to make sure you know that your trying to take a root rather than square or simply simplify. Simplified, its 2 and 2 is not a perfect square
C. 18/2 is 9 and a perfect square. I guess you could try to be taking the roots of 18 and 2 and could be tricky there until you cancel the sqrt(2) from the fraction
D. This is 16 and a perfect square
E. 36 is obviously a perfect square.
Correct answer choice is B
Hope this helps, good luck!
