Solving by Square Root Method and Completing the Square

Which method is MOST EFFICIENT to solve:
8x²  -  6  = 0

• Square Root Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

When should you decide to Complete the Square?

• When the a value is larger than 1

• When the middle term is odd

• When a = 1 and the middle term is even

Solve by the Square Root method: x² = 16

• ± 4

• ± 8

• 4

• 8

• A
• B
• C
• D

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

Solve by using the square root method:

• No Solution

• x = 3, -3

• x = -21, 21

• x = 7, -7

Solve using square roots.

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no real solution

• -3

• 3

• 4

• 1

• 2

• -2

• 8

• 0

• 5

• 11

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

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve by the Square Root method:

-5x² = -50

• ± 5

• ± 10

• ± √10

• -10