So it's going to be 3x squared. And to that, we can add the derivative of this thing right over here. So it's going to be plus, that's a different shade of blue, plus, and over here is negative 4, so it's plus negative 4 times x to the negative 4 minus 1, or x to the negative 5 power. So we have, and I can just simplify a little bit, this is going to be equal to 3x squared minus 4x to the negative 5. And so now we have all the tools we need in our toolkit to essentially take the derivative of any polynomial. So let's give ourselves a little practice there. So let's say that I have, and I'll do it in white, let's say that f of x is equal to 2x to the third power minus 7x squared plus 3x minus 100.