$\left(x^2-3\right)\left(x^2-sqrt\left(2\right)\right)$

$y=\frac{x^2}{2}\:+\:1$

$\lim_{x\to\infty}\left(\frac{e^{\frac{\pi\cdot i}{x}}}{x}\right)$

$\left(x\right)\left(x^2+3\right)$

$\int6\sin\left(\frac{x}{2}\right)dx$

$\left(1+x\right)\frac{d}{dx}\left(y\right)-xy=x+1$

$\frac{x^2+4x-8}{x^2-1}$