introduction to quadratic function

1. Module 1
Quadratic Equations
An Introduction

2. Martin-Gay, Developmental Mathematics 2
Do You Remember These Products?
Find each indicated product then
answer the questions that follow.
1.3x(3x-4)
2.(x+3)(x-4)
3.x(2x-5)
4.(x-2)2
5.(x-4)(x+6)
(x-4)(3x-4)

3. Questions:
a. How did you find each product?
b. In finding each product, what
mathematics concepts or principles did you
apply? Explain how you applied these
mathematics concepts or principles.
c. How would you describe the products
obtained?
d. Are the products polynomials? If YES,
what common characteristics do these
polynomials have?

4. Martin-Gay, Developmental Mathematics 4
Activity 2: Another Kind of Equation!

5. Martin-Gay, Developmental Mathematics 5

6. Martin-Gay, Developmental Mathematics 6
FACT OR BLUFF
Write fact if the equation is
quadratic and bluff if the equation is
not quadratic.
a. x2 + x – 3 = 0
b. 24x + 81 = x2
c. x2 = 2x (6x2 + 4)
d. 2x2 = 7x
e. 5 – x + (2x – 3) = 12
e. 5 – x + (2x – 3) = 12