$\frac{x+29}{\left(x-4\right)\left(x+7\right)}$
$9x-1>0$
$\lim_{x\to-1}\left(\frac{x+1}{\sqrt{x+5}}\right)$
$\int\:2x\:\cos4x\:dx$
$\frac{\cos\left(x\right)}{\sin\left(x\right)}.\frac{1}{\sin\left(x\right)}$
$9+30^3+25$
$\frac{sec\:x\:sin\:x}{tan\:x+cot\:x}=sin^2x$
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