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# Details for problem "Quadratic formula: Complete square to solve equation"

Quickname: 2057

Junior High School, High School, Senior High School.

## Summary

To solve a quadratic equation, complete the square.

## Description

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

1. Convert to monic form
2. Complete the square
3. Combine like terms on right side
4. Introduce square
5. Extract root
6. 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.

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## Customization options for this problem

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
Never, May, Always
Absolute value present
Never, May, Always

Remark
Description