Answer to Question #12452 in Algebra for reon

Question #12452
prove that the difference of the squares of two consecutive natural numbers is equal to their sum
1
Expert's answer
2012-07-26T11:25:36-0400
Let the first number be n, and the next one n+1:
(n+1)^2 - n^2 = n^2 + 2n + 1 - n^2 = 2n + 1 = n + (n+1).

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