Practice with The Quadratic Formula!

• a = 0

  b = 5

  c = -9

• a = 1

  b = -5

  c = 9

• a = 0

  b = -5

  c = -9

• a = 1

  b = -5

  c = -9

Answer explanation

Remember, the equation MUST be set equal to zero BEFORE you can identify the values of a, b, c.

Tags

CCSS.HSA.REI.B.4

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

a =​ (a)   ​ ​ b =​ ​ ​ (b)   c = ​ (c)  

Tags

CCSS.HSA.REI.B.4

Given the quadratic equation 2x²-x-3,

b²  would equal _? _

• 2
• -1
• 1
• -3

Tags

CCSS.HSA-REI.B.4B

Given the quadratic equation y= 2x²-x-3,

4ac would equal _? _

• -12
• 8
• -24
• -1

Tags

CCSS.HSA-REI.B.4B

Given the quadratic equation y=2x²-x-3,

b² - 4ac would equal _? _

• 25
• -23
• -25
• 0

Tags

CCSS.HSA-REI.B.4B

The formula to determine how many solutions a quadratic equation is called the discriminant which is...

• ax² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

If the discriminant is negative, you will have....

• two real solutions

• two irrational solutions

• no real solution

• one solution

Tags

CCSS.HSA-REI.B.4B

How many solutions will this quadratic equation x²+8x+16 have?

• 2 real solutions

• 2 imaginary solution

• 1 real solution

• 3 solutions

Tags

CCSS.HSA-REI.B.4B

Use the discriminant to determine the number of solutions the following quadratic equation has.

-2x² − x − 1 = 0

• 76 Two Solutions

• -7 Two Complex/Imaginary Solutions

• 9 Two Solutions

• 0 One Solution

Tags

CCSS.HSA-REI.B.4B

• 8
• 1
• -2
• x
• 2
• -8
• 0

Tags

CCSS.HSA-REI.B.4B