Question

Find the vertex of the graph of the function. f(x) = 4x2 + 24x + 32

Answer 1

The vertex coordinates are (-3,-4)

Answer 2

f(x) = 4x^2 + 24x + 32
-b / 2a
-24/2(4)
-24/8 = -3


f(x) = 4(-3)^2 + 24(-3) + 32
4(9) -72 + 32
36 -72 + 32 = -4


The vertex is (-3, -4)