Discriminant and Quadratic Formula Review

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

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

If the discriminant is equal to 0, how many solutions are there?

• No solutions

• 1 Real Solution

• 2 Real Solutions

• 2 Imaginary Solutions

Tags

CCSS.HSA.REI.B.4

If the discriminant is equal to 4, how many solutions are there?

• No Solutions

• 1 Real Solution

• 2 Real Solutions

• 2 Imaginary Solutions

Tags

CCSS.HSA.REI.B.4

If the discriminant is equal to -2, how many solutions are there?

• No Solutions

• 1 Real Solution

• 2 Real Solutions

• 2 Imaginary Solutions

Tags

CCSS.HSA.REI.B.4

CCSS.HSN.CN.C.7

What is the discriminant and how many solutions would this quadratic have?

x² - 6x + 9 = 0

• 0, No Solutions

• 0, 1 Real Solution

• 72, 2 Real Solutions

• -72, 2 Imaginary Solutions

Tags

CCSS.HSA.REI.B.4

What is the discriminant and how many solutions would this quadratic have?

-8x² + 6x - 4 = 0

• -92, 2 Imaginary Solutions

• 164, 2 Real Solutions

• -164, 2 Imaginary Solutions

• 92, 2 Real Solutions

Tags

CCSS.HSA.REI.B.4

Use any method to find the solutions to x² - 3x = 5

• x = -1.19, 4.19

• x = -4.19, 1.19

• x = -2.39, 8.39

• x = -8.39, 2.39

• x = 1.19, 4.19

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Use any method to find the solutions:
(Hint: Set the equation = to 0)

 $x^2+4x-40=-8$  

•  $x=-10,\ -4$  

•  $x=-4,\ 10$  

•  $x=-8,\ 4$  

•  $x=-4,\ 8$  

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Use any method to find the solutions for

y = -x² - 5x + 12

• -4.9 and -0.1

• -8.54 and 8.54

• -0.45 and 3.55

• -6.77 and 1.77

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11