$\lim_{x\to0}\left(\frac{x-\cos\left(x\right)}{x+\sin\left(x\right)}\right)$
$2x^2+8x-1=0$
$x^2+1\le4x-3$
$6x+3\left(-x+11\right)=3$
$\left(3x^5y^6\right)\left(4x^3y^{-4}\right)$
$\int\:\left(\frac{1}{x^2+2x+3}\right)dx$
$-5+-4+-1+8+-2+7$
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