$2x\:=\:10$
$y=x^2+5x$
$\left(2m\right)^3$
$\left(-\frac{y}{\sqrt{49-y^2}}\right)^2$
$\left[\frac{m^{-1}+n^{-1}}{m^{-1}-n^{-1}}\right]^{-1}$
$\frac{\left(4x^6+4x^4+8x^3-4x^2+8x-3\right)}{4x^2+4}$
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