$84:28$
$\frac{x-2}{x-a}\le2x-1$
$\frac{2d-4}{d-2}$
$\int-7x\sqrt{x+4}dx$
$w^2-24w+144$
$\lim_{x\to-3}\left(\left(2x-1\right)\right)$
$7=-2\left(1-x\right)+x$
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