$\lim_{x\to2}\left(\frac{x^2+2x}{x+2}\right)$

$\cos\left(34\right)\cos\left(2\right)+\sin\left(35\right)\sin\left(5\right)$

$-8w^2+7w+9-9w^2+9w-2$

$xy'-y=0$

$\frac{d}{dq}\left(-q^2-4q+96\right)$

$196m^2n^4-121m^8n^6$

$\int\left(\frac{\left(1+e^2\right)}{\left(1-e^2\right)}\right)dx$