$\frac{x^2+2x\:-3}{x^2+1}$
$\lim_{x\to3}\left(\frac{x^4+x^3-27x-27}{x^3+2x^2-4x-18}\right)$
$32+2\cdot5+13\cdot8+9$
$9-12-\left(-7\right)+5-\left(-8\right)+1-\left(-12\right)+3$
$4g^2-2g^2+2g-3g+7$
$\frac{3x^4+x-4}{x+5}$
$\frac{60}{5}$
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