$\lim_{x\to1}\left(\frac{x^2+ax+b}{x^2-1}\right)$
$ma^6-mb^6$
$\frac{x^2-6x}{x^2-7x+6}$
$\int5^{-x}dx$
$x^2+10x-48<0$
$\left(3x^2yz\right)\left(2x-3\right)$
$\lim_{x\to0}\left(\frac{x^2}{x-tanx}\right)$
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