Analyzing the Discriminant

d=(-5)² - 4(2)(-2) Find d

• 41

• 25

• 9

d=(-5)² - 4(2)(-2) What are a, b and c?

• a = -5, b = 2, c = -2

• a = 2, b = -5, c = -2

• a = -5, b = -2, c = 2

What is the discriminant of this equation?

3x² + 8x = 0

• 64

• 52

• 9

• 0

What is the discriminant of this equation?

• 120

• 36

• 16

• -120

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

If the discriminant is negative, then the quadratic has:

• 1 Real Solution

• 2 Real Solutions

• Half a Solution

• 2 Complex (imaginary) Solutions

Determine the value of the discriminant and describe the number and type roots for the following:

x² + 7x + 13

• 101, 2 real roots

• 3, 2 real roots

• -101, 2 imaginary roots

• -3, 2 imaginary roots

find the value of the discriminant of the equation x² + 3x + 12 = 0