Question

TIM X. BAN NAO BIET THI GIUP MINH VOI

3^{2x - 1}= 3^8: 3

 

 

Answer 1

3^8/3=3^7

=> 2x-1=7

=> 2x=8

=> x=4

Answer 2

\(3^{2x-1}=3^8:3\)

\(3^{2x-1}=3^7\)

\(\Leftrightarrow2x-1=7\)

\(2x=8\)

\(x=4\)

Answer 3

\(3^{2x-1}=3^8:3\)

\(\Rightarrow3^{2x-1}=3^7\)

\(\Rightarrow2x-1=7\)

\(\Rightarrow\)2x= 8

\(\Rightarrow\)x=4

vậy x=4

Answer 4

3^2x-1  = 3⁸ : 3

3^2x-1  = 3⁷

2x - 1 = 7

2x      = 7 + 1

x        = 8 : 2

x        = 4

Answer 5

\(3^{2x-1}=3^8:3\)

\(\Rightarrow3^{2x-1}=3^7\)

\(\Rightarrow2x-1=7\)

\(\Rightarrow2x=7+1\)

\(\Rightarrow2x=8\)

\(\Rightarrow x=8:2\)

\(\Rightarrow x=4\)

Vậy x = 4

_Chúc bạn học tốt_

Answer 6

Ta có : \(3^{2x-1}=3^8:3\)

\(\Leftrightarrow3^{2x-1}=3^7\)

<=> 2x - 1 = 7

<= >2x = 8

<=> x = 4

 Vậy x = 4 

Answer 7

3^2x-1  = 3⁸ : 3

3^2x-1  = 3⁷

2x - 1 = 7

2x      = 7 + 1

x        = 8 : 2

x        = 4

hok tốt