$\begin{array}{1 1} \frac{x^2}{2}+5x+\frac{4}{x}+c \\ \frac{x^3}{2}+5x^2+ \frac{4}{x}+c \\ \frac{x^2}{2}+5x^2- \frac{4}{x}+c \\ \frac{x^2}{2}+5x-\large \frac{4}{x}+c.\end{array}$