Question

3^x+1 = 9^x

Answer 1

\(3^{x+1}=9^x\)

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

\(\Rightarrow3^{2x}-3^{x+1}=0\)

\(\Rightarrow3^x.\left(3^x-3\right)=0\)

Vì \(3^x>0\) \(\forall x.\)

\(\Rightarrow3^x-3=0\)

\(\Rightarrow3^x=0+3\)

\(\Rightarrow3^x=3\)

\(\Rightarrow3^x=3^1\)

\(\Rightarrow x=1\)

Vậy \(x=1.\)

Chúc bạn học tốt!

Answer 2

\(3^{x+1}\) = \(9^x\)
\(3^{x+1}\) = \(3^2\)
x + 1 = 2
x = 2-1
x = ?
tự ra kết qả

Answer 3

x = -1/6 = -0.167