Completing the Square and Quad Formula Quiz

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

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When do you use the plus or minus symbol?

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Complete the square for

x² + 12x + ____

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

Answer the question.

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What is the first step in solving this equation

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

• 6

• 36

• 10

• 144

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

(x-_____)²=0

• 8

• 2

• 4

• 20

Solve the following equation by completing the square.

x²-2x-3=0

• {8,-7}

• {4,-4}

• {5,-3}

• {3,-1}

solve the quadratic equation by completing the square.

x²-2x-48=0

• {-6,-8}

• {6,8}

• {-6,8}

• {6,-8}

Solve the quadratic equations by completing the square.

5x²+50x+80=0

• {4,-14}

• {-4,-14}

• {-4,14}

• {4,14}