$y^2-9y+2$
$\left(m-1\right)\left(m-11\right)$
$h+h+h+h-h-h$
$-2+\left|3\right|-5$
$-\left(4-1+1-16\right)-4-1+7-8$
$\:x^{\frac{5}{2}}-x^{\frac{1}{2}}$
$t-27=4t$
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