Solving Quadratic Equations by Square Root

So far, which methods of SOLVING Quadratic Equations have we learned?

• Factoring

• Quadratic Formula

• Square Roots

• Graphing on Calculators

• Rainbow Method

Tags

CCSS.HSA-REI.B.4B

What are the solutions of this quadratic equation?

• x = 49

• x = 11

• x = -3

• x = 3

• x = -11

Tags

CCSS.HSA-REI.B.4B

Find the zeros of this quadratic equation

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Tags

CCSS.HSA-REI.B.4B

Find the zeros of this quadratic equation

• x = -4,

  x = 11

• x = -8,

  x = 8

• x = -4,

  x = 12

• x = 8,

  x = -12

• x = 12

  x = 4

Tags

CCSS.HSA-REI.B.4B

Find the roots of the quadratic equation

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Tags

CCSS.HSA-REI.B.4B

x² =25

• 5

• -5

• 5, -5

• No Real Solutions

Tags

CCSS.8.EE.A.2

3x² - 1 = 14

• 5

• -√5

• -√5, √5

• √5

Tags

CCSS.8.EE.A.2

5x² + 9 = 49

• 2√2

• -2√2

• 2√2, -2√2

• √8

Tags

CCSS.8.EE.A.2

When do you use the plus or minus symbol?
±

• After taking the square root of both sides

• After adding the square to both sides

• After taking half of b

• After setting the equation equal to zero

Tags

CCSS.HSA-REI.B.4B

Use the square root property to solve the Quadratic Equation.
2(x - 4)² = 200

• ±10

• -14, 6

• -6, 14

• 100

Tags

CCSS.HSA-REI.B.4B