All of the work shown, step by step and color coded for clarity.

$ \color{red}{A}x^2 + \color{green}{b}x + \blacksquare $

$ \color{red}{A}x^2 + \color{red}{b}x + \blacksquare $

Enter any number for A and B above You can write fractions with slashes such as '1/3' or '1/6'

Use this calculator to complete the square for any quadratic expression. Enter any valid number , including fractions into the text boxes and our this calculator will perform all work. If you are interested in learning more about completing the square or in practicing common problem types for completing the square, please check out our lesson on this topic.

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