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12 January, 12:59

When 8 is subtracted from the square of a number, the result is 7 times the number.

Find the positive solution.

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Answers (1)
  1. 12 January, 13:26
    0
    8

    Step-by-step explanation:

    x^2 - 8 = 7x

    x^2 - 7x - 8=0

    (x - 8) (x + 1) = 0

    x - 8 = 0 x + 1=0

    x=8 x = - 1

    8 is the positive solution
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