Solving Quadratic Equations

Solve the equation by factoring:

x²-6x+8=0

• x = 2 or x = 4

• x = -2 or x = -4

• x = -2 or x = 4

• x = 2 or x = -4

Tags

CCSS.HSA-REI.B.4B

Which answer choice correctly shows the quadratic equation above in factored form?

• (x + 7)(x - 2) = 0

• (x - 7)(x + 2) = 0

• (x - 7)(x - 2) = 0

• (x + 7)(x + 2) = 0

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:
4x² = 100

• -10, 10
• -25, 25
• -5, 5
• 5

Tags

CCSS.8.EE.A.2

Solve by factoring:
x² - 16 = 0

• 4
• -4
• -4, 4
• 16

Tags

CCSS.8.EE.A.2

Solve by factoring:

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Tags

CCSS.8.EE.A.2

Solve by completing the square:

x² + 10x = -9

• 1 and -12

• -1 and -9

• 1 and -9

• 1 and -1

Tags

CCSS.HSA-REI.B.4B

Complete the square:

x² + 10x + ____

• x² + 10x - 100

• x² + 10x + 100

• x² + 10x - 25

• x² + 10x + 25

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square:

x² -4x = 5

• 11 and -7

• 1 and 3

• 1.73 and -1.73

• 5 and -1

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula.

 $2p^2-4p-16=0$  

• p = 2 or p = -1

• p = 1 or p = -2

• p = 4 or p = -2

• No solution

Tags

CCSS.HSA-REI.B.4B