$x2+5x+5\le0$
$cos\frac{1}{2}x=-\frac{\sqrt{3}}{2}$
$\left(2a^2+3a^4+7a^3\right)-\left(8^3-2a^4-a^2\right)$
$\sqrt{x+9}+2=7$
$\int x\left(x^2-5\right)dx$
$\int\frac{\left(x-3\right)}{\left(\sqrt{4-x^2}\right)}dx$
$m3\:+\:1000$
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