Evaluate.

19x26(x+4)(x2+1) dx=\displaystyle \int\frac{{{19}{x}-{26}}}{{{\left({x}+{4}\right)}{\left({x}^{{2}}+{1}\right)}}}\ {\left.{d}{x}\right.}= (Use c\displaystyle {c} for the constant of antidifferentiation)