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14 October, 15:01

How to find the zeros of f (x) = 5 (2x-5) (5x+4)

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Answers (2)
  1. 14 October, 15:23
    0
    If xy=0 we assume x and y equal 0

    so

    the zeros are wehre f (x) = 0

    0=5 (2x-5) (5x+4)

    set each to zero

    5 is not equal 0 so we don't do that

    0=2x-5

    5=2x

    5/2=x

    0=5x+4

    -4=5x

    -4/5=x

    zeroes at x=5/2 and - 4/5
  2. 14 October, 18:46
    0
    5 (2x-5) (5x+4) = 0

    2x-5 = 0

    2x = 5

    x = 5/2 (Answer)

    5x+4 = 0

    5x = - 4

    x = - 4/5 (Answer)
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