i just need #2

voice Editor Sensitivity Grammarly enriciency? Answer: B grows faster at first then A grows faster, this shows us that a more consistently growing function is often better. 2. (15 points) Show that f(x) = V5x(x + 1) + log2 (x* + x2 + 2) is 0 (x9%) 3. (25 points) Determine whether each of these functions is O(x3). f(x) = x3 + 42