$\lim_{x\to2}\left(\frac{x^2-8}{x^2+x-2}\right)$

$\frac{dy}{dx}=\frac{-\left(xy-y\right)}{x^2}$

$\lim\:_{\theta\:\to\:\frac{\pi\:}{2}}\left(\frac{1+sin\left(\theta\:\right)}{cos\left(\theta\:\right)}\right)$

$\int e^{8x}\:cos3x\:dx$

$-\left(a+3b\right)$

$-2\left(33\right)$

$\int\left(\frac{14+x+2x^2}{-9+3x+x^2}\right)dx$