The square of a positive integer minus twice its consecutive integer is equal to 22. find the intege

Discussion in 'Calculator Requests' started by math_celebrity, Nov 24, 2016.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    The square of a positive integer minus twice its consecutive integer is equal to 22. Find the integers.

    Let x = the original positive integer. We have:
    • Consecutive integer is x + 1
    • x^2 - 2(x + 1) = 22
    Multiply through:
    x^2 - 2x - 2 = 22

    Subtract 22 from each side:
    x^2 - 2x - 24 = 0

    Using our quadratic calculator, we get:
    x = 6 and x = -4

    Since the problem states positive integers, we use:
    x = 6 and x + 1 = 7
    (6, 7)
     

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