csrg56911 csrg56911 22-03-2024 Mathematics contestada f(x) = x2 + 4x - 12 Which of the following is the vertex form of f(x) ? a. f(x) = (x + 4)2 - 12 b. f(x) = (x + 2)2 - 12 c. f(x) = (x + 4)2 - 28 d. f(x) = (x + 2)2 - 16