Question

tim  x biet :               \(\left(3^x\right)^2:3^2=\frac{1}{243}\)

Answer 1

\(\left(3^x\right)^2:3^2=\frac{1}{243}\)

\(3^{2x}:3^2=\frac{1}{3^5}\)

3^{2x - 2} = 3^-5

2x - 2 = - 5

2x = - 3

x = \(-\frac{3}{2}\)