Find the value of the limit, $\lim_{x \to -3} \frac{x^2-2x-15}{x^3+27}$.
40. Use the squeeze theorem to find the limit, $\lim_{x \to 0} x^4\cos(\frac{2}{x})$. Make sure to indicate $f(x)$, $g(x)$ and $h(x)$ and their order. Make sure to show the necessary limits.
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