$w^2-10w+21=0$
$1-20\cos\left(x\right)+100\cos^2\left(x\right)$
$-8x^2+15x+3$
$\frac{1}{\left(9+x\right)^2}$
$\left(4x+3y-z\right)\left(4x-3y+2\right)$
$12-3p>6$
$-7+-2+1+2+3+11$
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