Quadratic Formula and the Discriminant

Use the quadratic formula to determine the solutions.

2x² - 9x - 35 = 0

• x = 7/2, x = -6

• x = -5/2, x =5

• x = -3/7, x =6

• x = -5/2, x = 7

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 graph of a quadratic does not intercept the x-axis at any point, then it has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Use the quadratic formula to determine the solutions.

2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

Find the discriminant of the function 
x² - 5x = 0

• 25

• 21

• 1

• 29

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

• A
• B
• C
• D

What is the discriminant in the Quadratic Formula?

• -b + 4ac

• b - 4ac

• -b² - 4ac

• b² - 4ac

The discriminant is

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

Find the solutions:

• -4, 2

• -2, 4

• -16

• -4