$\frac{dy}{dx}=x^2-.5y$
$2\sin^2x+2=7\cos x$
$p^2+pr+ps+rs\:\:\:\:\:\:\:\:\:\:\:\:\:6p^2+6ps$
$\frac{1}{4}\cdot0$
$tanx+cosx=\frac{1}{sinx\cdot cosx}$
$-15n^5+4n^5$
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