$\frac{a}{2}^4$

$\int\frac{2e^{8x}-4}{e^{4x}}dx$

$\left(6y^3-3\right)^2$

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

$w=\sqrt{x^2+y^2}\:\:$

$\cos\left(u-v\right)\sin\left(v\right)+\sin\left(u-v\right)\cos\left(v\right)$

$9x^2-36x-9y^2-108y-4z^2+24z-360=0$