$\int\left(\frac{x^2}{2}\right)dx$

$x2-500x-12=0$

$-2\left(-x^4\right)-2\left(-x^3\right)-2\left(-5x^2\right)+2$

$\int\left(x+2\right)\sqrt{1-3x}\:dx$

$\frac{\left(3\cdot2^x\right)}{2^{\left(x-2\right)}}$

$\lim_{x\to\infty\:}\left(\frac{14-81^{\frac{489}{x}}}{4}\right)^x$

$secxsecv\cdot cos\left(x-v\right)$