Factoring Completing the Square

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

• 4

• 2

• 8

• 20

Given x²+12x-8=0 When we solve that equation using the Completing the Squares method, what number would fill in the blank: x²+12x ______ = 8 + _______

• 6

• 36

• 12

• 16

Factor the perfect square trinomial
x² + 14x + 49

• (x+7)²

• (x+7)(x-7)

• (x-7)²

• (x+14)²

What must 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

Complete the square.
x² + 6x + ____

• x² + 6x + 9

• x² + 6x - 36

• x² + 6x + 36

• x² + 6x - 9

• 64

• 16

• 8

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

What value of c would make this a perfect square trinomial?
x² + 2x + c

• 2

• 4

• -2

• 1