Hi, I'm currently reading "Calculus Made Easy" and ran into a road block. I'm reading this in my spare time so it's not school work or anything (I know some forums have policies about this is why I mention). The answer is there. I just want to know how to go about doing this problem. It relates to the quotient rule for differentiating but I don't think that is terribly important since it's just some simple algebra that's eluding me. Just an explanation or a link with information on how to do this would be nice. I am familiar with algebraic division (not a ton, but some) and couldn't figure it out. Neither could my friend who is decent with algebra. Anyway enough boring you. Thanks in advance. edit: I know how to get the first equation, I just need to know how to do the division part if it wasn't clear.