$x^2-x-42>0$
$4n-2$
$2a^2+5a+28$
$\sin\left(1.58\right)+\cos\left(1.58\right)$
$\frac{dy}{dx}=\frac{\left(x-y\right)}{-\left(x+y\right)}$
$\frac{\left(-15x^5+3x^4+8x^3-2x^2-3x+7x\right)}{3x^2+x}$
$2x^2+9x+10=0$
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