\( \begin{array}{l}9\left(x^{2}-2\right) \\ =9 x-18\end{array} \)
\( 9x(x - 1) = 0 \)
Step 1 :\( 9(x^2 - 2) = 9x - 18 \)
Step 2 :\( 9x^2 - 18 = 9x - 18 \)
Step 3 :\( 9x^2 - 9x = 0 \)
Step 4 :\( 9x(x - 1) = 0 \)