Hi, I need some help finding the limit of the following....

$\displaystyle \lim_{n \to \infty} \frac{2^n - n}{3^n - n}$

There is also one more i am stuck on,

$\displaystyle \lim_{n \to \infty} \sqrt[n]{2^n + 3^n + 4^n}$

For this one could I use the squeeze theorem?

Thanks