Solve Quadratic Equations by Using Square Roots

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

• 7±√32

• ±√65

• 3 and 11

• -1 and 15

Tags

CCSS.HSA-REI.B.4B

Solve: 2(x - 3)² - 14 = 18

• 1, 7

• -1, 7

• -1, -7

• 1, -7

Tags

CCSS.HSA-REI.B.4B

Solve : x² = 16

• ± 4

• ± 8

• 4

• 8

Tags

CCSS.8.EE.A.2

Solve: (x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Tags

CCSS.HSA-REI.B.4B

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
5m² + 1 = 6

• m = 0

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B

(2x - 4)² = 16

• x = 4

• x = 10

• x = -2

• x = 0, 4

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

(x + 2)² = 25

• x = 5 or -5

• x = 3 or -3

• x = 7 or -3

• x = -7 or 3

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

4x² - 1 = 48

• x = 7/2 or -7/2

• x = 2/7 or -2/7

• x = 49/4 or -49/4

• x = 47/4 or -47/4

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Tags

CCSS.8.EE.A.2