$8,5-7,5$
$\sqrt[3]{x^2+4}=2$
$\left(d+2\right)\cdot\left(d-2\right)$
$\:\:5.2=a-0.4\:$
$5a+b-3a+b$
$-2-5x-6$
$6x+3<x-9$
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