$w^2+20w+36$
$\frac{12^{-2}}{2^{-2}}$
$2\left(x+1\right)+x$
$b^3+6b^2+12b+8$
$-7\:.\:1\:+\:4$
$\left(4-\left(-1\right)\right)\left(6-\left(-1\right)\right)$
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