$\frac{2x+3}{2}$
$\sec^2x=-2\sec x$
$a-4=-1$
$-3x-2>3x+8$
$8x+5+8x+5+8x+5+8x+5$
$\frac{dy}{dx}=\frac{3y}{\left(y^2-1\right)}$
$\frac{2x^{-3}y^4}{4x^2y^2}$
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