The derivative of a constant times some expression is the same thing as the constant times the derivative of that expression. And what will the derivative with respect to x of, x to the third be? Well, we would bring the three out front and decrement the exponent, and so this would be equal to this two times the three times x to the three minus one power, which is of course the second power. So this would give us six x squared. So another way that you could have done it, I could just write, I could just write a six x squared here. So I could just, so this is going to be six x squared. And instead of going through all of this, you'll learn as you do more of these that you could have done this pretty much in your head, saying look, I have the three out here as an exponent.