If x and y are perfect squares, then which five of the following is not necessarily a perfect square?  Answers:
A) x^2	B) xy	C) 4x	D) x+y	E) x^5
If x=y=1^2=1, then each option but A is a perfect square, therefore A is NOT necessarily a perfect square.   x^2nswer: x^2.
<result>A</result>
If x and y are perfect squares, then which five of the following is not necessarily a perfect square?