If x and y are integers such that x^2-2x+2y+4=2x^2-3x+y-2, we can deduce that y is Pick:
A) not an even
B) an even
C) a perfect square
D) an odd
E) a prime
x^2 - 2x + 2y + 4 = 2x^2 - 3x + y - 2   y = x^2 - x - 6   y = (x-3)(x+2) (Note that one factor is even and one factor is odd.)   Then y must be even.   The answer is an even.
<result>B</result>
If x and y are integers such that x^2-2x+2y+4=2x^2-3x+y-2, we can deduce that y is