$-58\:-\:\left(-27\right)$
$cos14x\:=\:0$
$24r^3+9r^2+27r$
$a^2-\left(c-d\right)^2$
$-8x=72$
$\left(x+7\right)\left(w-4\right)$
$\left(a^2b^6c^4\right)^{10}$
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