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

$\lim_{x\to\infty}\left(cos\left(cos\left(x\right)\right)\right)$

$6r\cdot6r$

$\int\:\frac{\left(x^5+x^4-8\right)}{\left(x^3-4x\right)}dx$

$\int\frac{7\ln\left(x\right)}{x^4}dx$

$p^2-12p-28$

$\frac{3}{8}x^{3}x-\frac{9}{4}a^{2}x+\frac{9}{2}x-3x$