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17 October, 19:30

X squared minus 20x what value should be added to the equation to create a perfect square

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  1. 17 October, 19:34
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    X^2 - 20x + (20/2) ^2 - (20/2) ^2, or

    x^2 - 20x + 400/4 - 400/4, or x^2 - 20x + 100 - 100 (answer)
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