1. 6.3 Finding the Roots
The roots of a quadratic function are the places that a parabola crosses the x axis.
Hint: Roots can also be called Zeros or x intercepts
roots
Not all parabolas have 2 roots. Sometimes they have 1 root or no roots.
No roots (parabola never touched x axis)
1 root

2. – 16 x2 + 6x – 16 = 0 6 8 -2 (x + 8)(x – 2) = 0 (x + 8) = 0
6.3 Finding the Roots
We are going to use the Diamond Method to find our roots. You mastered Diamond Method in MT4 and practiced it again in MT5. Now let’s use our roots to graph.
Please find the roots of the equation x2 + 6x – 16 = 0 and graph…
– 16 6
x2 + 6x – 16 = 0
Answer:
(x + 8)(x – 2) = 0
Now for the roots…
(x + 8) = 0
(x – 2) = 0
X=-8, 2

3. 6.3 Finding the Roots
The last thing to do is to plot your points on a graph…
X=-8, 2
That’s all. If you prepared yourself with MT5, this should be easy!