And once again, there isn't a must way, there isn't a way that you have to do this, but just let you appreciate that there's multiple ways to approach these types of derivatives. So let's say someone said, take the derivative of two x plus one squared. Pause the video and think about how you would do that. Well one way to do it is just to apply the chain rule just like we just did. So you could say, all right, it's gonna be the derivative of the outside with respect to the inside. So it's gonna be two times two x plus one to the first power, taking one less than that, times the derivative of the inside, which is just going to be two. And so this is going to be equal to four times two x plus one which is equal to, if we wanna distribute the four, we could say it's eight x plus four.