$5s^2+65s+50$
$\frac{dy}{dx}=\frac{\left(-x-2y\right)}{2x+y}$
$\cos\left(2x\right)\cos\left(4x\right)$
$\sqrt[6]{y^3}$
$-a+b+2b-2c+3a+2c-3d$
$\:4^7\:\cdot\:4^{-9}$
$\left(2a^2\right)\left(5ba5\right)$
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