Write the quadratic function in vertex form. y = x^2 + 4x + 7

Question

asked Sep 24, 2017 109k views

1 Answer

Dmoney · Answer 1 · 2017-09-29T14:04:57+0000

The vertex form of the function given is
y = (x + 2)^2 + 3

The vertex form of a quadtratic function is in the form
y = (x - h)^2 +k

Start by completing the square of the quadtratic function which results to

y = (x^2 +4x +4) +7 -4

then simplifying the equation in the vertex form:
y = (x+2)^2 + 3