$\left(4x^2-7x\right)^3$
$4n^2-n\left|3n+5\right|-2n$
$-e^{\frac{-x}{2}}-\frac{e^{\frac{-x}{2}}}{2}$
$5x^2-4x-1$
$y=\:2e^{-2x}+\frac{1}{3}e^x$
$4x-4y\sqrt{x^2+1}\frac{dy}{dx}=0$
$\int\frac{x}{\left(16x^2-1\right)}dx$
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