$3\tan^2x\:-\:\sec^2x-5=0$
$\lim_{x\to0}\left(cos\left(sqrt\left(x\right)\right)^{\left(\frac{3}{x}\right)}\right)$
$y^3=x^2$
$\cos^2\left(60\right)-\sin^2\left(60\right)$
$\frac{dy}{dt}+\frac{1}{t}y=t$
$22x-20>40-8x$
$+5+12+9+8+11+11$
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