Completing the square

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Find the value of "c" that completes the square.

 $x^2+28x+c$  

• 28

• 14

• 196

• 56

Given the perfect square trinomial, identify the equivalent expression

x²-18x+81

• (x-18)²

• (x-9)²

• (x+81)²

• (x+9)²

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4
• 2
• 8
• 20

What is one of the solutions to this equation?

(x - 3)² = 49

• 7

• -7

• -4

• 4

Complete the Square
x² + 6x = 5

• (x + 3)² = 5
• (x + 6)² = 9
• (x + 3)² = 14
• (x + 6)² = 14

What is the vertex of the equation

 $y=\left(x-3\right)^2+5$  

• (-3, 5)

• (3, 5)

• (-3, -5)

• (3, -5)

What direction does the following graph open?

 $f\left(x\right)=\left(x-4\right)^2-5$  

• left 

• right

• up

• down

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x=1

 $y=x^2+6x+4$  What are the coordinates of the vertex?