Let me just focus on what's inside the brackets. You could view this as x to the negative two times the square root of x, times the square root of x. And then you might wanna use a product rule, but you could simplify this even better. You could say this is the same thing as x to the negative two times x to the 1 1⁄2 power. And now you're just using our exponent properties, negative two plus 1 1⁄2 is negative 3 1⁄2. So this is the derivative of x to the negative 3 1⁄2 power. And so here, once again, we took something that we thought we might have to use a quotient rule or use the product rule, and now this just becomes a straightforward using the power rule.