$9x^2\:-\:1$
$\frac{dy}{dx}=x^2-2x$
$24y^2-48xy-18x^2$
$\int\frac{52}{x^2-4}dx$
$m\left(a+b+c\right)$
$\left(4w-u\right)^2$
$a^2-18a+16$
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