Question

 (9−x2)(3x−6)=0

Answer 1

\(\Leftrightarrow\left(3-x\right)\left(3+x\right)2\left(x-2\right)=0\Leftrightarrow\left[{}\begin{matrix}x=3\\x=-3\\x=2\end{matrix}\right.\)

Answer 2

\(\Leftrightarrow\left[{}\begin{matrix}x=3\\x=-3\\x=2\end{matrix}\right.\)