$20^{3}\cdot01$
$a-\left[2b-\left\{3x-3a-\left(a-2b\right)\right\}+\left(a-b\right)\:\right]$
$4m^2+4m+1$
$\left(\frac{\ln\:\left(1\right)}{\frac{\pi}{2}}\right)$
$\left(\frac{w}{4}+8\right)\left(\frac{w}{4}+1\right)$
$5a^2+a^2+2a^2$
$\frac{1+tan\theta\:}{1-tan\theta\:}$
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