Completing the square

​Completing the square

Learning Targets:

I can solve quadratic equations by completing the square.

Let's try together

Multiple Choice

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

Multiple Choice

When do you use the plus or minus symbol?

Multiple Choice

Complete the square for

x² + 12x + ____

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

Multiple Choice

Answer the question.

Multiple Choice

What is the first step in solving this equation

Multiple Choice

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

• 6

• 36

• 10

• 144

Multiple Choice

When factoring x² -4x+4=0. What goes in the blank?

(x-_____)²=0

• 8

• 2

• 4

• 20

Multiple Choice

Solve the following equation by completing the square.

x²-2x-3=0

• {8,-7}

• {4,-4}

• {5,-3}

• {3,-1}

Multiple Choice

solve the quadratic equation by completing the square.

x²-2x-48=0

• {-6,-8}

• {6,8}

• {-6,8}

• {6,-8}

Multiple Choice

Solve the equation by completing the square.

x²-8x-9=0

• {-3,-13}

• {3,13}

• {-1,9}

• {1,9}

Multiple Choice

Solve the quadratic equations by completing the square.

5x²+50x+80=0

• {4,-14}

• {-4,-14}

• {-4,14}

• {4,14}