When n is divided by 5 the remainder is 3. What is the remainder when (n + 2)^2 is divided by 5?  Pick:  A) 0  B) 1  C) 2  D) 3  E) 4
n = 5x+3, for some integer x   (n+2)^2=(5x+5)^2=5y, for some integer y   When we divide this by 5, the remainder is 0.   The answer is 0.
<result>A</result>
When n is divided by 5 the remainder is 3. What is the remainder when (n + 2)^2 is divided by 5?