$025$

grations Techniques: Substitution Part

Question $5,4\mathrm{.}5\mathrm{.}25$

Evaluate. $($Be sure to check by differentiating!$)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}{r}^2(r^3-8{)}^{8}dr$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}{r}^2(r^3-8{)}^{8}dr=$

$($Type an exact answer. Use parentheses to clearly denote the argument of each function.$)$