1. Calculate this integral. Show all your steps and reasoning, including the details of any integral rules used. (6) [(4x-x)e dr 2. Calculate this integral. Show all your steps and reasoning, including the details of any integral rules used. (6) [ 2-4dx 3. Consider the following general integral form, where p(x) is an arbitrary polynomial. (4) [p(z)edx Why does integration by parts help with this type of integral? How many times do you have to use integration by parts to finish the integral?