Stage 23 · Quadratic Functions

23.3.3 Completing the Square to Find the Vertex

23.3 The Three Essentials: Vertex, Axis, and Opening

Point 3 of 6

23.3.3 Completing the Square to Find the Vertex

Core idea

Reshape y=ax²+bx+c into a perfect square and you can pull the vertex form right out of the general form.

Module goal. Move from vertex form to the general form, and master how to find the three geometric essentials along with the graph's properties.
eastmath.com · 23.3 The Three Essentials: Vertex, Axis, and Opening · 23.3.3 Completing the Square to Find the Vertex