Điều kiện: \(x\ne2\)
Pt: \(\Leftrightarrow2^{\dfrac{3x}{x+2}}=2^2.3^{4-x}\Leftrightarrow3^{\dfrac{x-4}{x+2}}=3^{4-x}\)
\(\Leftrightarrow\dfrac{x-4}{x+2}\log_32=4-x\)
\(\Leftrightarrow\left(x-4\right)\left(x+2+\log_32\right)=0\Leftrightarrow\left[{}\begin{matrix}x=4\\x=-2-\log_32\end{matrix}\right.\)