Question

Write the quadratic function f(x) = x2 + 8x + 3 in vertex form.

A) f(x) = (x - 4)2 - 13
B) f(x) = (x - 4)2 + 3
C) f(x) = (x + 4)2 + 3
D) f(x) = (x + 4)2 - 13

Answer 1

D) f(x)=(x+4)2-13

Explanation:

The vertex has an x-coordinate at x = -4 and y-coordinate at f(-4) = -13. The answer is f(x) = (x + 4)2 - 13.

Answer 2

D) f(x) = (x + 4)^2 - 13