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aprelskaya98
@aprelskaya98
April 2021
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Решите номер 549 и 550 (и напишите решение )
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ineedahoranhug
549. 2^-9 × 2^-3/2^-7 = 2^-12/2^-7 = 2^-5
550. 3^-7 × 3^-5/3^-9 = 3^-12/3^-9 = 3^-3
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aprelskaya98
там ответы в дробях
ineedahoranhug
Может просто последнее действие не делать? Какие там ответы?
aprelskaya98
1/32 и 1/27
ineedahoranhug
тогда не знаю
melkiyegik
(2^(-9) * 2^(-3) )/2^(-7) = 2^(-9+(-3)-(-7))=2^(-9-3+7)=2^(-5)
(3^(-7)*3^(-5))/3^(-9)=3^(-7+(-5)-(-9))=3^(-7-5+9)=3^(-3)
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Answers & Comments
550. 3^-7 × 3^-5/3^-9 = 3^-12/3^-9 = 3^-3
(3^(-7)*3^(-5))/3^(-9)=3^(-7+(-5)-(-9))=3^(-7-5+9)=3^(-3)