$\frac{sec\:s}{cos\:s}\:-\:\frac{1}{cot^2\:s}\:$
$\frac{dy}{dx}=4x^3+3x^2+2$
$7+\left(-3w^2\right)-2w+5w+5w^2$
$\frac{25a^4}{36}+\frac{1}{25}-\frac{a^2}{3}$
$\left(5\right)+\left(9\right)+\left(5\right)$
$x+9=25$
$\left(5x+4\right)x\left(5x-4\right)$
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