Question

\(\frac{x^7}{81}=27\)

Answer 1

Ta có x⁷/81 = 27

=> x⁷ /3⁴ = 3³ 

=> x⁷ =3³.3⁴

=> x⁷=3⁷

=> x=3

Answer 2

\(\frac{x^7}{81}=27\)

=>x⁷ = 81 . 27

=>x⁷ = 2187

=>x⁷ = 3⁷

=>x = 3

Vậy x = 3

Answer 3

\(\frac{x^7}{81}=27\)

\(x^7=81\cdot27\)

\(x^7=2187\)

\(x^7=3^7\)

\(x=3\)

Answer 4

\(\frac{x^7}{81}\)= 27

x\(^7\)= 81 . 27

x\(^7\)= 2187

3\(^7\)= 2187

Vậy x= 3

Answer 5

x⁷=81.27

x⁷=3⁷

vậy x= 3⁷