Question

Tìm x biết

3^x .3² .3 = 243.3

Answer 1

\(3^x.3^2.3=243.3\\ \Rightarrow3^x.3^2=243\\ \Rightarrow3^x.3^2=3^5\\ \Rightarrow3^x=3^5:3^2\\ \Rightarrow3^x=3^3\\ \Rightarrow x=3\)

Answer 2

=>3^x*3^3=3^5*3

=>x+3=6

=>x=3