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5 June, 12:33

4 times a number is 5 less than the square

of that number. Find the negative solution.

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Answers (1)
  1. 5 June, 12:49
    0
    The negative solution is - 1

    Explanation:

    Let the number is x.

    According to the question:

    4 times of x will be 4x

    5 less of the square of that number will be x² - 5

    Therefore,

    4x = x² - 5

    Make this equation in the form of a quadratic equation

    x² - 4x - 5 = 0

    (x - 5) (x + 1) = 0,

    The value of x = 5, and x = - 1

    The negative value of x of two solutions is - 1.
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