$8n-7=33$
$y^2+22y-50=0$
$x^2z^3-7xz^3+12z^3$
$\frac{15}{\left(4-7\right)}$
$\left(x^3-8\right)+\left(x-2\right)$
$\frac{d}{dx}19x-12$
$\left(5b-9c\right)\left(5b+9c\right)$
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