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Reply to "Ben's Buddies"

El Loro posted:

(x - y) times ((x+y) equals x² - y². If x = 80 and y = 2 then x-y=78 and x+y=82 so 78 x 82 = 80² - 2² = 6400 - 4 = 6396.

I knew that El 

*crosses fingers behind back* 

Moonie
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