Easy limit

Calculus Level 3

\[\ L = \lim \limits_{n\to \infty }\bigg( \sum \limits^{n}_{x=2}\frac{x^{2}+ x - 1}{\left( x-2\right) ! + \left( x - 1\right) ! + x! + \left( x+1\right) !} \bigg) = ? \]

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