MP3 Test 4: Quadratic Formula

Find the Discriminant of the equation:

• 9

• 0

• -7

• 7

If the discriminant is negative, then

• There are 2 real solutions

• There are two non real solutions

• There is one real solution

What type of solutions are shown here:

• Two Real

• Two Non Real

• One Real

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

• 
• 
• 

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6

• x = -5/2, x =5

• 
  x = -3/7, x =6

• x = -5/2, x = 7

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• 
  -10 & -4

• 
  -8 & 4

• 
  -4 & 10

• 
  

  8 & -4

For the function below, is the discriminant positive, negative, or zero?

___________

y = x² + 4x + 4

• 
  Zero

• 
  Not Sure

• 
  

  Negative

• 
  Positive

Determine the value of the discriminant and name the nature of the solution for the following:
x² + 7x + 13
Remember:  b² - 4ac

• √(-400) ; 2 non-real

• 
  400; 2 reals

• 
  

  -3; 2 non-real

• 
  0; 1 real

What is this formula?

• This is the speed of light formula.

• 
  This is the quadratic formula.

• 
  This is scary.

• This is the zero product property.