- #1

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Member warned that some effort must be shown

How do you solve this kind of limit?

[tex]\lim_{x \to ∞} \left( \frac{x^2 - 1}{x^2 + 2x + 5} \right)^{-2x}[/tex]

Please give me a clue.

[tex]\lim_{x \to ∞} \left( \frac{x^2 - 1}{x^2 + 2x + 5} \right)^{-2x}[/tex]

Please give me a clue.