I need to prove that $(n+1)^{1/2} - n^{1/2}$ is null. I know there's a similar question already posted but I need to prove this stating rules etc.
What I've done already is use difference of 2 squares to get to:
$1/[(n+1)^{1/2} + n^{1/2}]$ which I'm sure is near the end. Do I need to use the Squeeze Rule?