$\left(a+j\right)^2$
$a^2+2a-1$
$20\left(\frac{1}{5}w+\frac{3}{4}\right)$
$\left(\frac{x}{5}-0.5y^6\right)^2$
$\left(x+25\right)\left(x+10\right)$
$2x+1\le0$
$3x+2y-3z+5w=-2$
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