$\int\left(5x^2-8x\right)e^{2x}dx$

$\lim_{x\to0}\left(\left(\frac{\sqrt{x+4}}{x}\right)-2\right)$

$\frac{dy}{dx}+\frac{2y}{x}\:=\:5$

$196-n^6m^4g^2$

$\frac{\left(n\left(n+2\right)^2\right)}{5^n}$

$-2x+sen+\left(xcosy\right)y'=0$

$\left(-4x^3-9\right)\cdot\:\left(4x^{-5}-x-4\right)+\left(-x^4-9x\right)\cdot\:\left(-20x-1\right)$