$2x\:3+x\:2-5x-4$

$\int\frac{x^2}{\left(x^2+4\right)\left(x^2+4\right)}dx$

$x^3+9x^2+24x+20$

$\left(sin\left(x\right)+cos\left(x\right)\right)\:\frac{\sin\left(2x\right)}{2\left(\sin\left(x\right)+\cos\left(x\right)\right)}=\frac{\sin\left(2x\right)}{2}$

$\lim_{x\to0}\left(\frac{\left(x^2+1\right)}{\left(x^3\right)}\right)$

$2+y+2$

$\left(x+2\right)\left(x-10\right)$