Question

[(-0,5)^3]^x=1/64

Answer 1

\(\left[\left(-0,5\right)^3\right]^x=\dfrac{1}{64}\)

\(\Rightarrow\left(-\dfrac{1}{8}\right)^x=\left(-\dfrac{1}{8}\right)^2\)

\(\Rightarrow x=2\)

Answer 2

Ta có: \(\left[\left(-0.5\right)^3\right]^x=\dfrac{1}{64}\)

\(\Leftrightarrow\left(\dfrac{1}{2}\right)^{3x}=\dfrac{1}{64}\)

\(\Leftrightarrow3x=6\)

hay x=2