$-\left|-4\cdot\left(4-2+1\right)\right|$
$5x^2+20x+17$
$9a^4+36a^2+36b^2$
$w^4+4w^2-5$
$\frac{6x^3-3x^2-8}{2x+3}$
$-33-\left(-11\right)$
$3x^2y-2\cdot y^2$
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