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7 September, 10:34

Write the quadratic function in vertex form. y = x2 + 18x + 71

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  1. 7 September, 11:54
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    y = x² + 18x + 71

    y = x² + 18x + 81 + 71 - 81

    Then we can conclude that, y = (x + 9) ² - 10.
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