Solving Quadratic Equations Using Inverse Operations

Solve x²− 4 = 0

•  2 and -2

• 4 and -4

• 16 and -16

• 8 and -8

Tags

CCSS.HSA-REI.B.4B

x²−10=19

• x = √29

• x = ±2√9

• x = ±29

• x = ±5√19

Tags

CCSS.8.EE.A.2

An inverse operation is

• reversing the sign in an inequality

• using the opposite operation to solve equations

•  A number’s distance from zero

Tags

CCSS.6.EE.B.7

Solve x² - x - 12 = 0

• x = -6 or x = 2

• x = 12 or x =-1

• x = -11 or x = 1

• x = 4 or x = -3

Tags

CCSS.HSA-REI.B.4B

What is/are the value/s of x in the equation

x² + 5x + 4 = 0 ?

• x = 5 or x = 0

• x = 4 or x = 1

• x = 5 or x = 1

• x = -4 or x = -1

Tags

CCSS.HSA-REI.B.4B

How many solutions are there in the equation x² + 10x + 25 = 0?

• 2

• 3

• 4

• 5

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

Tags

CCSS.8.EE.A.2

x² = 16

• ± 4

• ± 8

• 4

• 8

Tags

CCSS.8.EE.A.2

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

Tags

CCSS.8.EE.A.2

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Tags

CCSS.8.EE.A.2