Hello everybody. I'm in sort of a bind here. For my calculus class we were given 60 integration problems with answers. Our job is to do the work from start to finish. My problem is I just so overwhelmed. We learn a new technique every class and I can't remember all the formulas and techniques to finish the problems.

Now I don't want straight answers, I really want to learn this stuff.

Here's an "easy" question from the final that I could not finish.

Problem:

And here is the answer:

Looks easy enough, but for some reason I just can't make integration work for me.