$\int\left(6x\sqrt{x^2-3}\right)dx$

$\lim_{x\to2}\left(\frac{x^3+6x^2-5x+1}{\left(x-2\right)\left(x-2\right)\left(x+3\right)}\right)$

$\frac{dy}{dx}=x^{-2}-\frac{y}{x}$

$\frac{2a^3-a+3a^2-1}{a+3}$

$\sqrt{\frac{1-3x^2}{\:x}}$

$e^{\left(x-1\right)}=e^{\left(2\left(x+1\right)\right)}$

$x^3-512$