\(\left(3x-2\right)^5=-243\)
\(\Leftrightarrow\left(3x-2\right)^5=-3^5\)
\(\Leftrightarrow3x-2=-3\)
\(\Leftrightarrow3x=-1\)
\(\Leftrightarrow x=-\frac{1}{3}\)
\(\left(3x-2\right)^5=-243\)
\(\Leftrightarrow\left(3x-2\right)^2=\left(-3\right)^5\)
\(\Rightarrow3x-2=-3\)
\(\Rightarrow3x=-3+2\)
\(\Rightarrow3x=-1\)
\(\Rightarrow x=-\frac{1}{3}\)
\(\left(3x-2\right)^5=-243\)
\(\Leftrightarrow\left(3x-2\right)^5=-3^5\)
\(\Leftrightarrow3x-2=-3\)
\(\Leftrightarrow3x=-1\)
\(\Leftrightarrow x=\frac{-1}{3}\)
\(\text{Vậy }x=\frac{-1}{3}\)