$\int\frac{x^{3}+2x}{x^{2}}dx$

$\lim_{x\to\infty}\left(\frac{cosx-1}{x-1}\right)$

$-24-\left(-50\right)-38$

$\left(x+6\right)\left(x-12\right)$

$\frac{m^6-y^6}{m^2-y^2}$

$\lim_{x\to0}\left(\frac{\arctan\left(2x\right)-ln\left(1+x\right)}{ln\left(1+x\right)\arctan\left(2x\right)}\right)$

$2\cos^23-q$