That's just negative three. If any of that looks completely unfamiliar to you, I encourage you to review the derivative properties and maybe the power rule. And now let's think about what is the derivative with respect to x, derivative with respect to x, of v of x, of v of x. Well, derivative of x squared, we just bring that exponent out front. It's gonna be two times x to the two minus one, or two x to the first power, or just two x. And then the derivative of three x is just three. So two x plus three.