(2008-1)×(2008+1)
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(2008-1)×(2008+1)(2008-1)×(2008+1)(2008-1)×(2008+1)=2008²-2008+2008-1=2008²-1=4032064-1=40
(2008-1)×(2008+1)
(2008-1)×(2008+1)
(2008-1)×(2008+1)
=2008² - 2008 + 2008 -1
=2008²-1
=4032064 - 1
=4032063