$\int x^2\sqrt{9x+8}dx$

$y'=\frac{x-y}{\:2x}$

$\frac{\sec\left(x\right)-\cos\left(x\right)}{\sec\left(x\right)\cdot\tan\left(x\right)}$

$\lim_{n\to\infty}\left(sin\:n\right)$

$\int\left(\frac{1}{\left(81x^2+1\right)^{\frac{3}{2}}}\right)dx$

$\left(7p-3\right)\left(-2p^2-4p+1\right)$

$\frac{72}{-24}$