Find C to Complete the Square

Complete the square.
x² + 6x + ____

• x² + 6x + 9

• x² + 6x - 36

• x² + 6x + 36

• x² + 6x - 9

Complete the Square
x² + 10x + ____

• x² + 10x - 100

• x² + 10x + 100

• x² + 10x - 25

• x² + 10x + 25

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

• 4

• 2

• 8

• 20

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

Find the value of "c" that completes the square. k^2-18k+c

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

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

• -121

• 121

• 11

• -11

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

• 28

• 14

• 196

• 56