We can add the exponents. We're taking the product, so it's gonna be x to the negative 3.5. And so you could just use the power rule. So this is going to be equal to, bring the negative 3.5 out front, negative 3.5 x to the, and then we just decrement this by one. We subtract one from that, negative 4.5 power. So as you can see, he could have gotten this answer much, much, much, much, much, much quicker, but he didn't make any mistakes. There's a little bit of a judgment error just immediately going forth with the quotient rule, which gets quite hairy quite fast.