Solving Quadratic Equations Using Square Roots

2x²=100

• x = √25

• x = ±5√2

• x = √100

• x = ±√5

Tags

CCSS.8.EE.A.2

x²−10=19

• x = √29

• x = ±2√9

• x = ±29

• x = ±5√19

Tags

CCSS.8.EE.A.2

Solve using square roots.

• √3

• ±√3

• -3

• No real solution

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Solve using square roots.
4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

Tags

CCSS.8.EE.A.2

(x - 7)² = 5

• x = 7-√5

• x = 7+√5

• x = √5

• x = 7±√5

Tags

CCSS.HSA-REI.B.4B

(x + 3)² = 36

• x = √36

• x = √39

• x = -9 and x = 3

• x = 9 and x = -3

Tags

CCSS.HSA-REI.B.4B

What are the solutions to 2(x−7)² = 32 ?

• 7±√32

• ±√65

• 3 and 11

• -1 and 15

Tags

CCSS.8.EE.A.2

x² = 8

• x = ±4

• x = ±2√2

• x = ±4√2

• x = ±√4

Tags

CCSS.8.EE.A.2

Solve by taking square roots:

5m² + 1 = 6

• m = 1

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B