You can put this solution on YOUR website! In your question, does the sqrt include 3-1 or just 3?
In other words, is it 12/(sqrt{3-1}) or 12/(sqrt{3}) - 1?
Get back to me and I'll be able to complete this problem for you.
NOTE: It is important to use parentheses and brackets correctly or else the question does not make sense.
I'll wait for your reply.