$\int\:\left(8x^5-5x^4-9x^3-6x^2-2x-3\right)dx$

$\left(x-2xy+e^y\:\right)dx+\left(y-x^2+xe^y\:\right)dy=0$

$\lim_{x\to\infty}\left(1+\frac{9}{x}\right)^{6x}$

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

$x^2e^2x$

$\int2x\left(x^2+4\right)^{17}dx$