Help me solve this limit

[vapid cedar]

If you make it one fraction can you maybe use Hopital?

[coral cave]

I still need to learn about hospital

The answer is 1/2 but I find -1

[solid dirge]

Use $a^2 - b^2 = (a+b)(a-b)$

[desert tendon]

Kar Hin

[solid dirge]

And thus $x^4 - 1 = (x^2 + 1)(x^2 - 1)$