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7 September, 21:58

What times what equals 24 and sums to 11

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Answers (2)
  1. 8 September, 00:52
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    Xy = 24

    x + y = 11

    x + y = 11

    - x - x

    y = - x + 11

    xy = 24

    x (-x + 11) = 24

    x (-x) + x (11) = 24

    -x² + 11x = 24

    - 24 - 24

    -x² + 11x - 24 = 0

    -1 (x²) - 1 (-11x) - 1 (24) = 0

    -1 (x² - 11x + 24) = 0

    -1 - 1

    x² - 11x + 24 = 0

    x² - 8x - 3x + 24 = 0

    x (x) - x (8) - 3 (x) + 3 (8) = 0

    x (x - 8) - 3 (x - 8) = 0

    (x - 3) (x - 8) = 0

    x - 3 = 0 or x - 8 = 0

    + 3 + 3 + 8 + 8

    x = 3 or x = 8

    x + y = 11

    3 + y = 11

    - 3 - 3

    y = 8

    (x, y) = (3, 8)

    x + y = 11

    8 + y = 11

    - 8 - 8

    y = 3

    (x, y) = (8, 3)

    The two numbers that add up to 11 and multiply to 24 are 8 and 3.
  2. 8 September, 01:21
    0
    Ok since _x_=24+11 well lets rephrase the equation _x_+11=24 so lets find _ and _ we can find it easily by subtract 24-11=13 but if you multiply 13x1 = 13 add 13+1 = 24 your answer would be 13,1
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