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ksushalukina201
@ksushalukina201
July 2022
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Используя формулу сокращённого умножения, вычислите:
а)89²
б)102²
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nbonio
Verified answer
А)=(90-1)^2=8100-180+1=7921
Б)=(100+2)^2=10000+400+4=10404
5 votes
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ksushalukina201
спасибо
nbonio
Не за что
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Answers & Comments
Verified answer
А)=(90-1)^2=8100-180+1=7921Б)=(100+2)^2=10000+400+4=10404