$\sqrt{a^3}^3$

$36+12m^2m^4$

$cos\left(\frac{5\pi}{3}\right)cos\left(\frac{\pi}{6}\right)-sin\left(\frac{5\pi}{3}\right)sin\left(\frac{\pi}{6}\right)$

$\left(1-x\right)\frac{d}{dx}\left(y\right)-y=0$

$\frac{dx}{dy}=\frac{x\left(ln\left(x\right)\right)}{y}$

$\left(\frac{1}{\tan^2\left(x\right)}\right)-\left(\cos^2\left(x\right)\right)=0$

$\frac{c}{13}+16=18$