$4x^2+16xy+16xy^2$
$\frac{3}{435.3}$
$x^2-2x=27$
$\sqrt{\frac{2x-y}{2x+y}}-\sqrt{\frac{2x+y}{2x-y}}$
$\frac{x^4-2x^2+1}{x+1}$
$-8-\left(2+10\right)$
$\left(-8\right)^3x\:\left(-8\right)^4$
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