$\int\frac{1}{\left(x-2\right)^2-4}dx$

$\int5\sin xdx$

$sec\left(-\frac{\pi}{18}\right)cos\frac{37\pi}{18}$

$\lim_{x\to\infty}\left(x+e^x+e^{2x}\right)^{\frac{1}{x}}$

$\frac{49}{10}x\frac{25}{28}$

$\int\frac{z^7}{\left(4-z^4\right)^2}\:dz$

$\frac{4x\:^{2\:}y^{10}}{24x^2y^7}$