$-5\sqrt{2a}$
$3a^2+8a+5$
$\frac{z+1}{z^2\left(z-1\right)}$
$\frac{7x}{6}+4\le3x+2$
$2x^2+10x+12\ge0$
$\int\frac{x^2+2x}{\left(x^2-1\right)}dx$
$\lim_{x\to0}\left(\frac{\sqrt{x^2+2x}}{2x-1}\right)$
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