Question

(x-3)⁴=81

Answer 1

\(\left(x-3\right)^4=81\)

\(\left(x-3\right)^4=3^4\)

\(\Rightarrow x-3=3\)

         \(\Rightarrow x=3+3\)

         \(\Rightarrow x=6\)

**** Nguyen Thi Trang Anh

Answer 2

\(\left(x-3\right)^4=81\)

\(=>x-3=3\)  hoặc \(x-3=-3\)

        x            = 3 + 3          x          =   -3 + 3

       x              =6                x          = 0