I'm trying to solve a problem that is for my final exam review and i'm quite stuck with these two problems..

1.

*x*3

*(x*2 +38) dx

for this problem, i know the basics where i have to solve for the square first then solve for the indefinite.

I've tried to calculate it and this is my answer

could you please check it if it is right or wrong. Or if it's wrong could you explain it step by step for me.

Your help will be appreciated!

2.

this is the second problem and i don't have any clue on how to solve the problems.

Step by step help will be appreciated..

Thanks for everyone who will help cause I need this materials for next week's final exam!