$\int\frac{2+x}{x^3}dx$
$\left(4y+5\right)\left(4y-8\right)$
$6\:cos^\theta=0$
$y^{\prime}-9xy=0$
$\:3a\:-\:2b\:-\:6b\:+\:9a$
$\left(1+\tan\right)\sec^2=1$
$2x^2+2x-3>0$
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