$3x^2+27x$
$\cot^2\left(x\right)=0.28$
$4x^2-12x+67$
$135+135+350+102$
$3x^2-2x-4=0$
$\log_y\left(\sqrt{z}\right)$
$3\left(2x\right)\left(-3\right)^2$
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