$-2x^2-2x-1=0$
$\left(a+9b\right)\left(a-2b\right)$
$-\left(-100\right)$
$1-x^n\left(\frac{1}{1-x}\right)$
$-12-\left(2-7\right)+\left(8-\left(-5+9\right)-6\right)$
$\left(+4\right)+\left|\left(+3\right)+\left(7\right)\right|+\left(+1\right)$
$\frac{1}{1}^{000000000000000000000000000000000000000000000000000000000}$
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