$216^1$

$2x^2+y^2=4x$

$\lim_{x\to\infty}\left(\frac{e^x}{x^6}\right)$

$\lim_{x\to\infty}\left(\frac{x^2+6x+8}{x^2-3x-10}\right)$

$\sqrt[3]{64y^2}\sqrt[3]{27y^4}$

$\frac{\left(sin\:2x\right)}{\:sin\:\left(\left(\frac{\pi\:}{2}\right)-\:x\right)}\:=\:2sin\left(x\right)$

$\frac{dy}{dt}=-\frac{4y}{t}$