If r is the square of a positive integer, which of the following must be equal to the square of the next positive integer?  Options:
A) √n + 1
B) n + 1
C) n^2 + 1
D) r + 2√r + 1
E) n^2 + 2n + 1
If r is the square of a positive integer, which of the following must be equal to the square of the next positive integer?   r = (x)^2 where x is a positive integer   To calculate -   (x+1)^2 = x^2 + 2x + 1   root(r) = x   Ans - r + 2 root(r) + 1   This should be r + 2√r + 1
<result>D</result>
If r is the square of a positive integer, which of the following must be equal to the square of the next positive integer?