$2x-2\:x\:2x+2$
$\sqrt[2]{\frac{2n}{81m^{12}}}$
$x ^ { \frac { x } { x } }$
$\left(x+y\right)^3+3\left(x+y\right)-\left(x\right)^3+3\left(x\right)$
$\lim_{x\to3}\left(\frac{2-\sqrt{3}}{4-x}\right)$
$33.86+2.4+13.950$
$\frac{m^4}{m^2}$
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