$-2+1+2$
$\lim_{x\to0}\left(\frac{x^2+2}{2x}\right)$
$x^3-25x+x$
$\left(\frac{626}{a^8}\right)^{\frac{-3}{4}}$
$25a+10$
$3300-200x+4x^2$
$x-x^3+4x+5x^2+11x^3+7x^2+9x^3$
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