$6x^2+7x-24$
$\int7te^tdt$
$-4x^3\:y-x^3y$
$3\left(x+4\right)=-18$
$x^2+xy+y=1$
$x^4-2x^3+5x-1\left(x-2\right)$
$\lim_{x\to0}\frac{x-2+\sqrt{x^2+x+25}}{x^2+2x}$
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