$5b-2+4b+5$
$\frac{650}{507.8125}$
$8-\left[10-\left(-8+5\right)+\left(7-9\right)\right]+6$
$\left[-\left(2a-c\right)+\left\{-a-c-2a-a-c\right\}+2c\right]$
$24^2+34+5$
$\left(4yz\right)^3$
$\left(0.2x^3+1.2\right)\left(0.2x^3-1.2\right)$
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