$\tan^2x\left(sin^2x-3sinx+2\right)$

$^{14}\sqrt{27^{12}\cdot243\:^4}\:\:$

$\lim_{x\to0}\left(x^{1-\cos\:\:\left(x\right)}\right)$

$\frac{cota}{csca-1}=\frac{csca+1}{cota}$

$\frac{1}{-2\left(0\right)^2}$

$\left(13x+14y\right)^3$

$\lim_{x\to\infty}\left(\frac{x+sin\left(x\right)}{x-sin\left(x\right)}\right)^{2x}$