$yx^{-3}x\:3xy^2$

$m^2-12m+36$

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

$34x+10x$

$\log_{12}\left(3x\right)=\log_{12}\left(-4x-2\right)$

$\lim_{x\to0}\left(\frac{x^2-3x}{sinx}\right)$

$\frac{1}{1-\cos\left(3v\right)}+\frac{1}{1+\cos\left(3v\right)}$