$800:40$
$x^2=-5x-3$
$3x^2+x^2-12x+4$
$16a^3-24a^2+32a-8$
$\sqrt{x^2-2x^2}$
$\left(\left(x+2\right)-y^2\right)^2$
$\left(e^3+2e\right)^2$
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