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13 January, 23:07

The square of a certain negative number is equal to 5 more than one half of the number what is the number

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  1. 14 January, 01:20
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    The square of a certain negative number is equal to 5 more than one half of that number

    what is that number

    let x be that number

    thus x² = x/2 + 5

    x² - x/2 - 5 = 0

    2x² - x - 10 = 0

    (2x-5) (x + 2) = 0

    x = 5/2 or - 2

    so the number is - 2
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