Answer
$g'(s) = (s-s^2)^8$
Work Step by Step
We are told to find the derivative using Part 1 of the Fundamental Theorem of Calculus given the expression: $g(s) = \int ^{s}_{5} (t-t^2)^8dt$
Since $g(s) = \int^{b}_{a}f(t)dt$
$g'(s) = f(s)$
Thus,
$g'(s) = (s-s^2)^8$