$\int \sqrt{x^2 + 2x}dx$
I have no clue what to do on this problem. It is in the trig substitution chapter so I know I have to use that somehow. I know that I can not complete the square because both terms are positive and will not give me a difference of squares.
I know u subsitution will not work because I get leftover x terms.
I know that I basically have to manipulate this problem algebraically before I can work with it but I just do not know how to do that.
I tried to factor out an x or -x but neither makes progress.