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Completing the Square Worksheet

Grade 9 Math worksheet on completing the square, covering basic concepts, solving equations, and converting to vertex form.

Grade 9 Math AlgebraCompleting the Square
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Includes

Fill in the Blanks3 Short AnswerMultiple Choice

Standards

CCSS.MATH.CONTENT.HSA.SSE.B.3.BCCSS.MATH.CONTENT.HSA.REI.B.4.A
7 sections · Free to use · Printable
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Completing the Square

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Read each question carefully and answer to the best of your ability. Show all your work for full credit.

1. A perfect square trinomial is a trinomial that results from squaring a  .

2. To complete the square for \(x^2 + bx\), you need to add \((\frac{b}{2})^2\) to make it a  .

3. What constant term should be added to make \(x^2 + 10x\) a perfect square trinomial?

4. What constant term should be added to make \(x^2 - 7x\) a perfect square trinomial?

5. Which of the following is the factored form of \(x^2 + 12x + 36\)?

a

\((x-6)^2\)

b

\((x+6)^2\)

c

\((x+6)(x-6)\)

d

Not a perfect square trinomial

6. Solve the equation \(x^2 + 6x - 7 = 0\) by completing the square.

7. Solve the equation \(2x^2 - 8x + 6 = 0\) by completing the square.

8. Convert the quadratic function \(y = x^2 - 4x + 1\) into vertex form by completing the square.

9. Convert the quadratic function \(y = -x^2 - 6x - 5\) into vertex form by completing the square.