Solving Quadratics by Taking Square Root

Which method of solving quadratics would you use to solve the following:

• Factoring when a = 1

• Completing the Square

• Factoring when a > 1

• Square Roots

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

x² = 49

• -7

• 7

• 49

• ±7

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Tags

CCSS.8.EE.A.2

Solve
3x² - 192 = 0

• x = - 16, 16

• x has no real solutions

• x = - 8, 8

• x = - 64, 64

Tags

CCSS.8.EE.A.2

• {6.78,-6.78}

• {8,-8}

• {7,-7}

• No Solution

Tags

CCSS.8.EE.A.2

Solve for h.
(h - 2)² = 9

• h = 5, -1

• h = 5, -5

• h = 5

• h = -1

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

4(x+9)²=24

• {-9+√6,-9-√6}

• {3,-3}

• {3}

• so solution

Tags

CCSS.8.EE.A.2

3x² - 1 = 14

• 5

• -√5

• -√5, √5

• √5

Tags

CCSS.8.EE.A.2

Solve by taking square roots:

2b² - 4 = -166

• b = 9i, b = -9i

• b = 3, b = -3

• b = 9, b = -9

• b = 3i, b = -3i

Tags

CCSS.HSA-REI.B.4B