And here I have a x squared, I'm subtracting x squared, so I'm subtracting the derivative with respect to x of x squared. So notice, all that's happening here is I'm taking the derivative individually of each of these terms, and then I'm adding or subtracting them the same way that the terms were added or subtracted. And so what is this going to be equal to? Well, this is going to be equal to, for x to the fifth, we can just use the power rule. We can bring the five out front and decrement the exponent by one, so it becomes five x, we could say to the five minus one power, which of course is just four. And then for this second one, we could do it in a few steps. Actually, let me just write it out here.