999×999＋998×998＝?hadfi

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999×999＋998×998＝?hadfi
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999×999＋998×998＝?hadfi
999×999＋998×998＝?
hadfi

999×999＋998×998＝?hadfi
999*999+998*998 = 1 994 005
(1000-1)^2 + (1000-2)^2
= 1000000 - 2000 +1 +1000000 -4000 +4
=1994005

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