The question:

Find the limit as x tends to infinity

I'm not sure how to go about it. I'm thinking that I need to get rid of that square root, or at least, get it in a form which will make it easy to read off the limit.

I've tried the following:

I'm not sure how to factor out x in the denominator, I'm guessing that'd simplify it.

If anyone could help, or offer a different method of solving this, I'd really appreciate it.