$0=-4w-4$
$\frac{2x^2+6}{x^2-1}$
$4tx\:\frac{dx}{dt}=x^2+1$
$4y^2-11y+6$
$x-\left(x-5\right)-3\left(x-6\right)$
$\left(4x\:-\:3\right)^3$
$\left(4-7\sqrt{3}\right)\cdot\left(4+7\sqrt{3}\right)$
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