Complete the Square

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 the x-term

• After setting the equation equal to zero

Complete the square for
x² + 12x + ____

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

Complete the square.
x² + 6x + ____

• x² + 6x + 9

• x² + 6x - 36

• x² + 6x + 36

• x² + 6x - 9

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

Write the following equation in vertex from by completing the square:

y = x² - 2x - 3

• y = (x - 1)^2 - 4

• y = (x +4) ^2 - 4

• y = (x - 5)^2 - 3

• y = (x - 8)^2 - 7

Complete the square for x² + 12x + ____ (find the missing number in the blank)

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

Complete the square for

x² - 14x + ____

(find the missing value that goes in the blank)

• - 196

• 49

• - 49

• 28

Complete the square for

x² + 6x + ____

(find the missing value that goes in the blank)

• 9

• 12

• 36

• - 9

Find the missing value "c" to create a perfect square trinomial:
x² + 26x + ___ 

• 13

• 136

• 169

• 26

What value of c would make this a perfect square trinomial?
x² - 12x + c

• 36

• 24

• 144

• -36