$36m^2-12mn+n^2$
$4\left(x+2\right)<3\cdot\left(x-5\right)+8$
$-4x^2+5x^3-8x$
$m+2^3$
$\frac{d}{dx}\left(\frac{x+4}{x\cos\left(x\right)}\right)$
$-1\:+\:-4\:+\:12$
$\sec\left(\frac{\pi}{4}\right)+2\csc\left(\frac{\pi}{3}\right)$
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