$x^4+x^3-16x^2-4x+48$
$m^4+2m^2+9$
$6\cdot\left(32-4\cdot6+2\right)-\frac{\left(7+2\cdot3\cdot4-7\cdot3\right)}{5}$
$\left(x+7\right)\left(x-3\right)+\left(x-2\right)^2$
$\left(8pq+2p^3q^2\right)^3$
$\left(x+2n\right)\left(x-2n\right)$
$3\sin^2$
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