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16 April, 10:37

The product of two consecutive even integers is 840 find these numbers

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  1. 16 April, 12:54
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    Integers are 2n and 2n + 2

    2n * (2n + 2) = 840

    4n^2 + 4n - 840 = 0

    Solving by quadratic formula:

    n = 14 and n+2 = 16

    Therefore the integers (2*n and 2*n+2) are

    28 and 30

    check:

    28 * 30 = 840
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