Question
Compute:$(3 \times 2)$ !
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If $\lim _{x \rightarrow 1}\left[\frac{x^4-1}{x-1}\right]=\lim _{x \rightarrow a}\left[\frac{x^3-a^3}{x-a}\right]$, find all possible values of a.
$\lim _{x \rightarrow-2}\left[\frac{-2 x-4}{x^3+2 x^2}\right]$