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4 September, 20:27

The difference of the squares of two positive consecutive even integers is 76. find the integers. use the fact that, if x represents an even integer, then x+2 represents the next consecutive even integer.

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  1. 4 September, 23:30
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    Write an equation based on the problem

    (x + 2) ² - x² = 76

    We should find the value of x to know the smaller integer.

    (x + 2) ² - x² = 76

    simplify the quadratic expression for (x + 2) ²

    (x + 2) ² - x² = 76

    (x + 2) (x + 2) - x² = 76

    x² + 2x + 2x + 4 - x² = 76

    x² - x² + 4x + 4 = 76

    4x + 4 = 76

    Solve for x

    4x = 76 - 4

    4x = 72

    x = 72/4

    x = 18

    Find the bigger integer

    x + 2 = 18 + 2 = 20

    The integers are 18 and 20
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