$27\left(-48\right)$
$f\left(x\right)=2x^2+10x-12$
$49m^2+84mn+36n^2$
$\frac{\left(x+2\right)}{2-x}\ge1$
$2x^2+6x+4\le0$
$\int\frac{2x+3}{\sqrt{4-x^2}}dx$
$w^5+1$
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