Simple Quadratic Formula

The quadratic equation can be used to solve quadratic equations that cannot be factored.

• True

• False

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

If the discriminant equals 0, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• Imaginary Solutions

If the discriminant is positive, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• Imaginary Solution

QUESTION 8

• A 

• B 

• C 

• D 

QUESTION 5

• A

• B 

• C 

• D 

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• All of the above