$-y^2+2y+9$
$\int\frac{16x+14}{4x^2+7x+12}dx$
$\lim_{x\to1}\frac{x^2-3x-1}{x-1}$
$x^2+12+40$
$59-x=11$
$x^2-20x+3$
$\left(x^2+x^1\right)\left(x^2-x+4\right)$
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