Solving Quadratics with the Quadratic Formula

What are the solutions?

• 0 and 8
• -2 and -4
• 3 and -1
• 2 and 4

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

What are the zeros?

• 0 and 4

• 0 and -4

• 0

• -4

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• all of the above

Tags

CCSS.HSF-IF.C.7A

The first step in solving quadratic equations is to . . .

• factor

• set the equation equal to 0

• use quadratic formula

• complete the square

Tags

CCSS.HSA-REI.B.4B

Identify a, b and c in the quadratic equation: 
 $2x^2-3x-5=0$   

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

Identify a, b and c in the quadratic equation. (REMEMBER the equation MUST equal zero!)
 $4x^2-8x=3$  

• a = 4, b = -8, c = 3

• a = 4, b = -8, c = -3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Identify a, b and c in the quadratic equation:  $x^2+4=0$ 

• a = 0 b = 4 c = 0

• a = 1 b = 4 c = 0

• a = 1 b = 0 c = 4

Solve using the Quadratic Formula:

2x² − 8x − 24 = 0

• x = 6, −2

• x = 2, −6

• x = 4, 2

• x = 2, 6

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:

2x² − x − 3 = 0

• x = −3/2, 1

• x = 3/2, −1

• x = −3/2, & −1

• x = 3/2, 1

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:

15x² + 22x = −8

• x = −2/3, 4/5

• x = 2/3, −4/5

• x = 2/3, 4/5

• x = −2/3, −4/5

Tags

CCSS.HSA-REI.B.4B