$9x^2-60x+25$
$35+7\cdot\left(6-11\right)$
$\frac{d}{dx}\left(5xy^5-8x-76y+548=19\right)$
$3a\:and\:5a$
$2x+20=-30$
$\left(-2x^2-3x+2\right)^2$
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