Question

РЕШИТЕ ПОЖАЛУЙСТА!!!!!!!!!!СРОЧНО!!!!

Answer 1

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