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program
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~18~20
A
Word Count: 1
For many of us, mathematics is useful only in some simple ways in our everyday lives,
like when we 18. things. However, math can be used in far more ways.
Now, let's take a look back at its history where and how it 19.
along By about 3000 BC, people in Egypt lived a rich life, and this gave
many of them more time to get more knowledge about mathematics. Also,
with the help of the picture writing system at that time, the knowledge was
kept passing on, and people 20. to use math in many ways, from things
in their everyday lives like counting money to the buildings of the Seven Wonders.
【文章翻譯
(a+b) (a−b)
1530
system
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B
