Question

tìm x

3 mũ x . 8 = 24

5 mũ x +1 =25

Answer 1

\(3^x\cdot8=24\Rightarrow3^x=3\Rightarrow3^x=3^1\Rightarrow x=1\)

\(5^x+1=25\Rightarrow5^x=24\Rightarrow5^x=5^{1,9746...}\Rightarrow x=1,9746...\)

Answer 2

Answer 3

3^x..8=24
3^x   =24:8
3^x   =3:3
 x   = 1   
 

5^x+1=25
5x     =25-1
5^{x      = 24:5}
 x     = 4,8