Completing the Square

Find the missing value "c" to complete the square.

x² + 6x + ____

• 9

• 12

• 36

• - 9

• Set the equation equal to zero

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

• Subtract the 21 from  both sides

What did you need to add to both sides to complete the square?

• 6

• 36

• 10

• 144

Find the value of "c" that completes the square. x_{ }^2+8x+c

• -4

• 4

• 8

• 16

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

• 28

• 14

• 196

• 56

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

• -121

• 121

• 11

• -11

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. 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.