If (x + 1)(x + 3) = x^2 + x, what is a possible value of x?
Choices:
A) 2	B) 3	C) -1/3	D) -3	E) -1
Rearranging the given expression:   (x + 1)(x + 3) = x^2 + x   i.e. x^2 + 4x + 3 = x^2 + x   i.e. 3x = -3   i.e. x = -3/3 = -1   Answer: Option -1   Had it been a difficult expression to solve further, then we could have used options to check which one satisfies the expression after solving it as further as possible.
<result>E</result>
If (x + 1)(x + 3) = x^2 + x, what is a possible value of x?