1. The problem statement, all variables and given/known data Integrate: dx/sqrt(x^2+2x +5) 2. Relevant equations refer to above 3. The attempt at a solution I can integrate the equation dx/sqrt(1+x^2) using the rules cosh^2 u - sinh^2 u = 1 cosh^2 u = 1+sinh^2 u but i dont know where to start with this question because of the 2x + 5 in the denomentor. Could someone please point me in the right direction.