\(1,2^3\cdot x^2=1,2^5\Leftrightarrow x^2=\dfrac{1,2^5}{1,2^3}=1,2^2=1,44\)
\(\Leftrightarrow x=1,2\) hoặc \(x=-1,2\)
Vậy x = 1,2 hoặc x = -1,2
(1,2)3.\(x^2\) = (1,2)5
\(x^2\) = (1,2)5:(1,2)3
\(x^2\) = (1,2)2
\(\left[{}\begin{matrix}x=-1,2\\x=1,2\end{matrix}\right.\)