9-16.(4-3x)2 =0 \(\Leftrightarrow\) 16.(4-3x)2=9 \(\Leftrightarrow\) (4-3x)2=\(\dfrac{9}{16}\) \(\Leftrightarrow\)\(\left[{}\begin{matrix}4-3x=\dfrac{3}{4}\\4-3x=\dfrac{-3}{4}\end{matrix}\right.\) \(\Leftrightarrow\) \(\left[{}\begin{matrix}3x=4-\dfrac{3}{4}\\3x=4-\left(\dfrac{-3}{4}\right)\end{matrix}\right.\) \(\Leftrightarrow\left[{}\begin{matrix}3x=\dfrac{13}{4}\\3x=\dfrac{19}{4}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{13}{4}:3\\x=\dfrac{19}{4}:3\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{13}{12}\\x=\dfrac{19}{12}\end{matrix}\right.\)
