$\lim_{x\to0}\left(\frac{2\sin\left(x\right)-\sin\left(2x\right)}{x^2\tan\left(3x\right)}\right)$
$\lim_{x\to0}\left(\frac{x^2-3x-10}{x+2}\right)$
$100+4$
$\int_{-\infty}^0\left(e^{x+1}\right)dx$
$\left(2a-9\right)\left(2x\:+\:6\right)$
$\left(2xy^2\right)^3\left(xy\right)^8$
$5\left(2x-4\right)\le4x+10$
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