$4\left(2-x\right)^3$
$\left(+93\right)\cdot\left(+14\right)$
$\lim_{x\to0}\left(\frac{3x-2x^{-1}}{2x+4x-1}\right)$
$u\cdot u$
$\left(x^g\right)^2$
$\left(2x^{-1}\right)\left(2x^0\right)$
$-3.2+5.6$
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