$9x^{12}+6x^6-3$
$4r^2-12r+7$
$sen\left(0\right)=0.45$
$\left(m-n^3\right)\left(m+n^3\right)$
$4x^2-16x+16=144$
$2x-3<x+4$
$w^4-12w^2+36$
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