Overview Did you watch the How to Derive the Quadratic Formula If not I highly encourage you do so The second to last line shows the fractions separated before being combined into one like so b 2a b 4ac 2a Directions Think about this formula and answer the following questions Be sure to be thorough and respond to two of your classmates 1 This formula allows us to find the roots zeros of a quadratic function Explain how you know the roots are always symmetric around the x coordinate of the vertex 2 Using this last idea if a function has the roots of x 4 and x 12 what is the x coordinate of it s vertex 3 How does the discriminant relate to this idea post 4 Lastly though it is not relevant to graphing prove that the two roots x x x b It might be best if you work this out on paper and attach a picture of this part to your a