$\sqrt{9-3\cos^2}$
$\lim_{x\to0}\frac{9x^2}{2\ln\left(\sec\left(x\right)\right)}$
$\left(3x^2-2\right)\left(3x^2+3\right)$
$\arcsin\left(\frac{12}{20}\right)$
$y'=2y^3$
$4x-1<11$
$.\:\:5-6\left(x+3\right)+4x$
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