Quickname: 2057

Suitable for K-12 grades: Grade 9 Grade 10

Junior High School, High School, Senior High School.

To solve a quadratic equation, complete the square.

The solution set of a quadratic equation is to be determined. For this purpose the technique of completing the square is used.

If desired, the solution is described in the solution sheet in the steps

- Convert to monic form
- Complete the square
- Combine like terms on right side
- Introduce square
- Extract root
- Specify the solution set

is presented in detail. These steps can be presented in the problem definition as cloze text, the correct values must then be inserted.

In the problem definition the solution of a quadratic function is asked for. It can be set whether the way of solution via square completion should also be mentioned.

To simplify or complicate the problem, the degree of normalization can be changed. Thus it can be set whether the absolute element should be present (i.e. not equal to zero) or not, and whether the leading coefficient (of x^2) is equal to one or not. In the latter case, the conversion to monic form requires a division of the whole equation by the lead coefficient's value.

The number of problems is also adjustable.

Tags: Polynom Quadratic functions Terms

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Parameter

Possible values

Number of problems

1, 2, 3, 4, 5, 6

Mention completion of square

Yes, No

Indicate steps

no, with solution, with problem&solution

Lead coefficient (x^2) >1

Never, May, Always

Absolute value present

Never, May, Always

Remark

Description

Name and direct link

Complete the square to determine the vertex

To determine the vertex of a square function, convert it to vertex form by completing the square.

You may pass on the worksheets offered for download on this page to others, but not modify or sell them.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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