Please solve the attached question, and please show all work that is needed to get the answer. I am trying to better understand the process/the question.

Thank you. =)

Evaluate the following integral using trigonometric substitution. dx X What substitution will be the most helpful for evaluating this integral? O A. x =2tan0 OB. x=2sin0 O C. x=2 sec0 Rewrite the given integral using this substitution. dx = ( do 14-x (Simplify your answers. Type exact answers.) Evaluate the integral. x7 dx = 14-x- (Type an exact answer.) Q8