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22 March, 08:39

Factor to find the zeros of the function defined by the quadratic expression. 16x2 - 240x + 896 A) x = 7 or x = 8 B) x = 7 or x = - 8 C) x = - 7 or x = 8 D) x = - 7 or x = - 8

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  1. 22 March, 10:07
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    16x2 - 240x + 896 - - - >divide all by 16

    16 (x2 - 15x + 56)

    16{x2 - 7x - 8x + 56x}

    16{x (x-7) - 8 (x-7) }

    16 (x-8) (x-7)

    x1=8/1 = 8

    x2 = 7/1 = 7

    The answer would be A) x = 7 or x = 8
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