$x^3+4x^2+x+4$
$\left(+240\right)\:\left(-18\right)$
$\:\:-132-12-45$
$\int\left(z^2-4\right)\left(12z-z^3\right)^4dz$
$\frac{z^6}{z+2}$
$n^2+n-42$
$4x^4\cdot5x^5$
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