$\int\frac{6}{x\ln\left(2x\right)}dx$
$2\cot^2\left(30\right)+\cos^2\left(30\right)-\sin^2\left(60\right)$
$a^2-14a-4a$
$9-3x\:\ge5-6x$
$\lim_{x\to4}\left(\frac{\left(x^2-16\right)}{\ln\left(x-3\right)}\right)$
$\frac{x^4+2}{x^2+6x+3}$
$m^2+11m+30$
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