Factoring Completing the Square Quadratic Formula

Which method is most efficient to solve:
x²  -  11x + 10 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

Which method is most efficient to solve:
.02x²  -  .5x + 3 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

What are the roots?
2x² + 2x - 12 = 0

• x = 3 ; x = -3

• x = 12 ; x =  -12

• x = -3 ; x = 2

• x = -2 ; x = 2

What are the zeros of the function?
f(x) = x² + x - 20

• x = 5 ; x = -4

• x = -20 ; x = 0

• x = -5 ; x = 4

• x = 20; x = 0

Next step in completing the square?
3x² + 18x - 6 = 0

• 3(x² + 6x + 9) = 6 + 9

• 3(x² + 6x + 36) = 6 + 36

• (x² + 6x) = 9

• 3(x² + 6x + 9) = 6 + 27

Which method is most efficient to solve:
7x²  - 28 = 0

• Square Roots

• Factoring

• Completing the Square

• Quadratic Formula

Which quadratic is being solved in the formula?

• 2x² - 5x + 3

• 2x² + 5x + 3

• 3x² - 5x + 2

• 2x² - 5x - 3

To solve by completing the square, what needs to be moved in this equation?
x² = 9 - 4x

• the -4x

• the 9

• the x²

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero

• Divide 10 by 2 and add the result to both sides

• Add a² and 10a together

• Subtract the 21

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