$2x+1=x-8$
$\int-30x^2\cos\left(5x^3+2\right)dx$
$1x^3-3x^2-4x+12$
$-2-\left(-23\right)$
$0.2628740125-\left(\frac{-0.9999984242\left(1.3-\:0.2628740125\right)}{12.78584918+0.9999984242}\right)$
$m^2+m+m^2-m+m^2+n$
$4n^2+15n+9=0$
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