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2 August, 17:22

The product of a number and 9 less than the number is 22. Find the number.

The number is

(Use a comma to separate answers as needed.)

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Answers (1)
  1. 2 August, 19:29
    0
    N (n-9) = 22

    n^2-9n = 22

    n^2-9n-22 = 0

    find 2 numbers that add to - 9 that multiply to - 22

    (n-11) (n+2)

    n-11=0, n+2=0

    n=11, n=-2
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