$16m^2+48+36$
$\left(9a^4+7b^2\right)\left(81a^2-63ab^2+49b^4\right)$
$2x\le5$
$\left(y\:-\:7\right)\left(y\:-\:8\right)$
$-6-2+7+11-1$
$x^3+8x^2+19x+12$
$3^{2x+x^3}$
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