$4-x=4x^2-20x+25$
$\left(-3xy^4z^3\right)^5$
$\left(6x^5-2x^3+1\right)\left(2x^6-6x^4-5\right)$
$v^2-16$
$120\cdot24$
$-4=48$
$16x+2>3x+5$
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