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1. What is the sum of two consecutive even numbers, the difference of whose squares is 84?





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  • By: guest on 01 Jun 2017 05.48 pm
    Let the numbers be x and x + 2. Then, (x + 2)2 - x2 = 84 4x + 4 = 84 4x = 80 x = 20. The required sum = x + (x + 2) = 2x + 2 = 42.
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