The Discriminant

If the discriminant is negative, then the solution will be

• one real solution

• two real solutions

• two non-real solutions

• all real numbers

Determine the value of the discriminant

x² + 7x + 13=0

• 101

• 3

• -101

• -3

Describe the number and type solutions for the following:

x² + 7x + 13

• 2 real solutions

• 2 non-real solutions

• 1 real solution

• 1 non-real solution

What is the discriminant of 6x² − 2x − 3 = 0

• 76

• 29

• -68

• none of these

How many solutions?

-2x² - x - 1 = 0

• 2 real

• 2 non-real

• 1 real

• all real numbers

Determine the values of a, b, and c for the quadratic equation:  4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

When the discriminant is (a)   there will be two imaginary roots.

• Negative
• Zero
• Positive

1 What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

1 The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

2 A function has a discriminant of 0.

How many x-intercepts does it have?

• 0

• 1

• 2

• 5