$ln\left(x^2+x\right)$
$8-7s-s^2$
$4x^4-12x^3+9x^2$
$2x^2-5x+5=0$
$\lim_{x\to2}\left(\frac{x^2+2x-8}{x^2-x-2}\right)$
$-3x+4<11$
$8\left(6b\right)$
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