$\sqrt{x\left(x+7\right)}$

$\frac{\left(18x\left(3x^2+2x+4\right)\right)}{\left(x+2\right)^3\left(x-1\right)^4}$

$\frac{5x+6}{x}-\frac{x+1}{2x}$

$\int\frac{1}{\left(9-x\right)^{\frac{3}{2}}}dx$

$\lim_{x\to14}\frac{5x-14}{x-14}$

$\int\frac{x+1}{\sqrt[2]{x^2-9}}dx$

$-2015+\frac{i}{\pi}$