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31 March, 02:44

Factor f (x) = 4x²-15x-25 and then use zero-product property to find the zeros of the quadratic function. Show all work (Will Mark Brainliest) [Pre Calculus]

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  1. 31 March, 05:53
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    f (x) = 4x²-15x-25

    f (x) = (4x + 5) (x - 5)

    zero-product property

    let f (x) = (4x + 5) (x - 5) = 0

    so

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

    4x + 5 = 0

    4x = - 5

    x = - 5/4

    x = - 1.25

    x - 5 = 0

    x = 5

    answer

    factor: (4x + 5) (x - 5)

    x = 5 and x = - 1.25
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