If $ \lim _{n \rightarrow \infty}\left(\sqrt{n^{2}-n-1}+n \alpha+\beta\right)=0 $, then $ 8(\alpha+\beta) $ is equal to [JEE Main 2022, 25 Jul (Shift 1)]

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If \( \lim _{n \rightarrow \infty}\left(\sqrt{n^{2}-n-1}+n \alpha+\beta\right)=0 \), then \( 8(\alpha+\beta) \) is equal…

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