Ch 2.6 (Day 2) The Quadratic Formula and the Discriminant
Obj: SWBAT - Solve Equations Using the Quadratic Formula & Classify Roots Using the Discriminant
Quadratic Formula
x=
Discriminant
D=
D>0
D<0
What is the
nature of the
roots?
What is the nature
of the graph? How
many times does it
hit the x-axis?
D is perfect
D is not perfect
D=0
Analyzing Quadratic Equations by using the Discriminant
Find the type and number of solutions for each equation.
2.6 – The Quadratic Formula - (day 2) pg 105, 18-28 EVEN 30-35 all
Warm – up Ch 2-6
Solve the following using the Quadratic Formula:
𝑓 (𝑥) = 𝑥 2 − 4𝑥 + 9
a=
b=
c=
-What kind of answer did you get (real, imaginary/complex)?
Why…..? What made it so? (hint: 𝑏2 − 4𝑎𝑐)