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**CALsunshine** So, I've noticed that I don't have any problems setting up a derivative, but simplifying the quantity after applying the quotient rule, product rule, chain rule, etc. (or even a combination of them) seems to lead to a huge disaster every time. Is there some trick or way that I could avoid these pitfalls? I'm come to realize its holes in my Pre-Algebra and Algebra skills, but I don't have the time to re-teach myself every rule. Any suggestions would be appreciated.