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21 sats
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0 replies
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@south_korea_ln
OP
23 Sep 2024
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parent
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on: (999^2 - 1)/998
charts_and_numbers
There is a trick.
Hint: remember the formula for (a^2 - b^2)...
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speak now and forever hold your keys
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10 sats
There is a trick.
Hint: remember the formula for (a^2 - b^2)...