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Автор - Мирова

РЕШИТЕ ПОЖАЛУЙСТА!!!!!!!!!!СРОЧНО!!!!

Ответ

Автор - Apofeoz
7^{frac{15}{7}}-(3bullet7^{frac{5}{7}})^3=7^{frac{15}{7}}-3^3bullet7^{frac{5}{7}bullet3}=7^{frac{15}{7}}-27bullet7^{frac{15}{7}}=\\=7^{frac{15}{7}}(1-27)=-26sqrt[7]{7^{15}}=-26sqrt[7]{7^{14}bullet7}=-26bullet7^2sqrt[7]7=-1274sqrt[7]7.

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