Given the function f (x) = x² + 4x - 1, find the maximum or minimum value. Then state whether it is a maximum or minimum value. A (-2, 5); maximum B (-2, 5); minimum C (-2, - 5); maximum D (-2, - 5); minimum

D (-2, - 5); minimum

Step-by-step explanation:

hello:

f (x) = x² + 4x - 1 = (x²+4x+4) - 5

f (x) = (x+2) ² - 5 ... (vertex form)

a (x-h) ²+k when a = 1 h=-2 and k = - 5

the vertex is : (-2; -5) a positif

conclusion : D (-2, - 5); minimum