$-8x^2+32x-56$
$\frac{2x^2+2}{6}+\frac{x}{4x+2}$
$1\frac{3}{5}+1\frac{2}{5}$
$b-2\sqrt{2b^2}+b-8$
$4x^4-8x^3-13x^2+2x+3$
$x^2-x+7$
$\left(x-1\right)+\left(x-2\right)+\left(x+3\right)+\left(x+4\right)$
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