$a^2+2a-3$
$\sqrt{4}+\sqrt{4}$
$\int3t\:e^{11t}dx$
$\lim_{x\to-3}\frac{x+3}{x^2+7x+12}$
$3x-12\le5x-6$
$\left(-3x^2+2y^2\right)^3$
$\lim_{x\to2\:}7-3x^2-x^3$
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