Determine the vertex form and the maximum or minimum value of the function. f(x) = 2x ^ 2 + 8x + 3

Question

A f(x) = 2 * (x + 4) ^ 2 - 13 the maximum value of fis - 13

Ⓑ f(x) = 2 * (x + 4) ^ 2 - 13 , the minimum value of f is -13

f(x) = 2 * (x + 2) ^ 2 - 5 the maximum value of f is -5

f(x) = 2 * (x + 2) ^ 2 - 5 the minimum value of f is -5

Answer 1

The correct answer is:

f(x) = 2 * (x + 2) ^ 2 - 5, the minimum value of f is -5