Question

3^(x - 3) - 3^2 = 2.3^2
 

Answer 1

\(\Leftrightarrow3^{x-3}=18+9=27\)

=>x-3=3

hay x=6

Answer 2

x=6

Answer 3

\(3^{x-3}-3^2=2.3^2\\ \Rightarrow3^{x-3}-9=2.9\\ \Rightarrow3^{x-3}-9=18\\ \Rightarrow3^{x-3}=27\\ \Rightarrow3^{x-3}=3^3\\ \Rightarrow x-3=3\\ \Rightarrow x=6\)