# CompleteSquare Command

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##### CompleteSquare

This article is about GeoGebra command.

##### Command Categories (All commands)

CompleteSquare[ <Quadratic Function> ]
Returns the quadratic function in the form: \mathrm{\mathsf{ a (x - h)^2 + k }}.
Example:
CompleteSquare[x^2 - 4x + 7] yields 1 (x - 2)2 + 3.

## CAS Syntax

CompleteSquare[ <Quadratic Function> ]
Returns the quadratic function in the form: \mathrm{\mathsf{ a(x-h)^2+k }}.
Example:
CompleteSquare[x^2 - 4x + 7] yields (x - 2)2 + 3.

## Comments

Article Completing the square on wikipedia shows how can this be useful in describing and plotting quadratic functions.

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