$\lim_{x\to-1}\frac{x^3-1}{x+1}$
$-\left(23-\left(34-57\right)\right)$
$3-\left(-4\right)\cdot\left(-6\right)-\left|\left(5-9\right)\right|\left(-2\right)+1\cdot$
$\frac{33k^{11}m^6}{18k^6m^4}$
$-45+22-14+9-75$
$\left(3a^3+8b\right)\left(3a^3-b\right)$
$5+8\left(8+5n\right)$
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