Quadratic Functions by Square Root

Solve by taking the square root:

x² = 49

• -7

• 7

• 49

• ±7

Tags

CCSS.HSA-REI.B.4B

2x²=100

• x = ±25

• x = ±√50

• x = ±√100

• x = ±√5

Tags

CCSS.8.EE.A.2

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Tags

CCSS.8.EE.A.2

Solve by taking square roots:

5x² - 4 = 41

• x = 9 or x = -9

• x = 3, x = -3

• x = 8, x = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

Click on picture for question.

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

• x = 3, -3

• x = 3i, -3i

• x = -7, 7

• No Soluition

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve by taking square roots

• ±23.25

• ±5

• ±25

• No real solution

Tags

CCSS.HSA-REI.B.4B

• x= 9, -9

• x= -49, 49

• x= 7, -7

• x= -5, 5

Tags

CCSS.8.EE.A.2

• A
• B
• C
• D

Tags

CCSS.8.EE.A.2

Solve using square roots.

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2