solve quadratic equations by finding square roots

Solve : x² = 16

• ± 4

• ± 8

• 4

• 8

Solve: -5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Solve: (x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

Solve.

x² +12 = 5

• x = ± 49

• No Real Solutions

• x = ± √7

• x = ± 3.5i

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

CCSS.HSN.CN.A.1

CCSS.HSN.CN.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.A.2

CCSS.HSA.REI.B.4

Solve.

(2x - 4)² = 16

• x = 4

• x = 10

• x = -2

• x = 0, 4

Tags

CCSS.HSA.REI.B.4

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.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

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.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Tags

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4