$\lim_{x\to-\infty}\left(\sqrt{x^2+x}\right)+x$
$x^2+3y\frac{dy}{dx}=0$
$10x^2+40xy+25$
$-80x+320$
$\left(x^3-2\right)^4$
$7\cdot2+1-5$
$y\left(y+6\right)\ge6$
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