$\lim_{x\to\frac{\pi}{2}}\left(3\sec\left(x\right)\:-\:3\tan\left(x\right)\right)$
$j^2+16j=25$
$3\left(-2\right)^2-5$
$5a+5b-5c$
$\int\left(\sqrt{x}-3\right)\left(\sqrt{x}+1\right)dx$
$x^2-x-56<0$
$2x+2<3x$
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