So we're gonna use a power rule to figure out g prime of x is equal to, bring that exponent out front, negative one times x to the, and then decrement the exponent negative two power. So g prime of negative one, of negative one is equal to negative one times negative one to the negative two power. And that's just the same thing as negative one over negative one squared. This is one, so this is just all going to evaluate to negative one. So this is negative one. And so we have five times negative one, which is negative five, plus three times negative one, which is negative three, which is equal to negative eight. So f prime of negative one is equal to negative eight.