Question

9^x-1=9

Answer 1

9^x-1 = 9

=> x - 1 = 1

=> x = 2

Answer 2

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

\(\Rightarrow9^{x-1}=9^1\)

\(\Rightarrow x-1=1\)

\(\Rightarrow x=1+1\)

\(\Rightarrow x=2\)

Vậy...

Answer 3

x=2

Answer 4

9^(x-1)=9

9=9^1

suy ra 9^(2-1)=9

x=2

Answer 5

9^{x - 1} = 9

9^{x - 1} = 9¹

\(\Rightarrow\) x = 1 + 1

\(\Rightarrow\) x = 2.

Answer 6

9^x-1 = 9

9^x-1 = 9¹

=> x - 1 = 1

x = 1 + 1

x = 2

Vậy x = 2