If these things look unfamiliar to you, I encourage you maybe to not watch this video, because in this video we're gonna think about when do we apply these rules, what strategies, and can we algebraically convert expressions so that we can use a simpler rule? But just as a quick review, this is, of course, the power rule right over here. Very handy for taking derivatives of x raised to some power. It's also, we can use that with the derivative properties of sums of derivatives or differences of derivatives to take derivatives of polynomials. This right over here is the product rule. If I have an expression that I wanna take the derivative of and I can think of it as the product of two functions, well then the derivative is gonna be the derivative of the first function times the second function plus the first function times the derivative of the second. Once again, if this looks completely unfamiliar to you or you're a little shaky, go watch the videos, do the practice on the power rule or the product rule, or in this case, the quotient rule.