I need to review integration and the techniques required to integrate each problem. I haven't done calculus in years so please try your best to help me remember how to do these problems. Also, if possible, could you explain why and/or when you need to use a certain technique by just looking at the problem? Thank you!

Show all the steps 3x+ 11 11) X e . x d x 12 9 - x2 0x X- X-6