Question

Giúp mình làm câu này với:

9^{x -1}=9

Answer 1

9^{x -1}=9=9¹

=> x-1=1

=>x=2

Answer 2

TL :

  9^{x - 1} = 9

=> x - 1 = 1

=> x      = 1 + 1

=> x = 2

Chúc bn hok tốt ~

Answer 3

\(9^{x-1}=9\)

\(9^{x-1}=9^1\)

=>x-1=1

=>x=1+1

=>x=2

Answer 4

\(9^{x-1}=9\)

\(9^{x-1}=9^1\)

\(\Rightarrow x-1=1\)

\(\Rightarrow x=1+1\)

\(\Rightarrow x=2\)

Answer 5

\(9^{x-1}=9\)

\(\Rightarrow x-1=1\)

\(\Rightarrow x=2\)

\(Vậy\) \(x=2\)

Answer 6

\(9^{x-1}=9\)

\(9^{x-1}=9^1\)

\(x-1=1\)

\(x=2\)