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5 July, 10:36

Express in completed square form x 2 + 6x + 20

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  1. 5 July, 13:25
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    (x + 3) ² + 11

    Step-by-step explanation:

    Given

    x² + 6x + 20

    To complete the square

    add/subtract (half the coefficient of the x - term) ² to x² + 6x

    x² + 2 (3) x + 9 - 9 + 20

    = (x + 3) ² + 11
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