$a^2+12a\:+\:25$
$4x+19>2x-15$
$\left(3m^2x-2^2\right)$
$1029-65+12-28$
$\left(x+10\right)\left(x+11\right)$
$2x^2-8x+5=0$
$\sqrt{6-2}$
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