$\begin{array}{1 1} 5\log|x^2+4x+10|-7\log|(x+2)+\sqrt{x^2+4x+10}|+c \\5\log|x^2+4x+10|+7\log|(x+2)+\sqrt{x^2+4x+10}|+c \\ 5\log|x^2+4x+10|+7\log|(x+2)-\sqrt{x^2+4x+10}|+c \\ 5\log|x^2+4x+10|-7\log|(x+2)-\sqrt{x^2+4x+10}|+c \end{array} $
