$2\left(-1\right)+\left(-1\right)\left(0\right)+1\left(3\right)$
$\frac{1}{2}\left(-6\right)+1$
$\lim_{x\to1}\left(x-\sqrt{x}\right)$
$\left(-7x^3y^2\right)^3$
$\left(2a-3b+c\right)\left(2a+3b-c\right)$
$\left(1+3u\right)\left(3+\sqrt{-25}\right)$
$25-7+10-5+8-11-2+13$
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