$n^4<200$
$4x^2+x=3$
$2w^2.2w^2$
$372.47+40.05+3.8$
$tan^2x+cot^2x=sec^2+csc^2x-2$
$\int\:\frac{1}{x+3}dx$
$\frac{\left(2m^2+3\right)}{m}$
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