$\left|2\right|+\left|-3\right|-1$
$24a-36b$
$\left(3y-4x\right)\left(4x+7y\right)$
$\lim_{x\to\infty}\left(\frac{x}{x+1}\right)^{x^2}$
$x^3-4x^2-2x+8$
$m^2-2m-162$
$3\cos\left(2x-40\right)-1=0$
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