$\tan\left(2x\right)+\frac{1}{3}\tan^3\left(2x\right)$
$5+2a-2ab-5b$
$\:b^2\:-\:5b\:+\:6$
$2y''+7y'-4y=0$
$\int4e^{3-5x}dx$
$4x^2-20x+10$
$\frac{d}{dx}\left(3y^2+2xy^3-7y=7x\right)$
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