$\left(x^2+5\right)\left(x^2-4\right)$
$\left(2z-1\right)^2$
$5\left(m-2\right)$
$4a^2+28a+49$
$\left(3^2\right)^4\cdot5^4$
$m^2+5m-14=0$
$36x^2+96x$
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