$x^2+x-72<0$
$\left(y+2\right)\left(y-1\right)$
$3x+3\le-1$
$\left\{2x-4\right\}^2\left\{x+6\right\}\left\{x+2\right\}$
$f\left(x\right)=\sec\left(4-2x\right)$
$4z^2-36z+81$
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