Answer:
\(9.\left(x+28\right)=0\)
\(\Rightarrow x+28=0\)
\(\Rightarrow x=-28\)
\(\left(27-x\right).\left(x+9\right)=0\)
\(\Rightarrow\orbr{\begin{cases}27-x=0\\x+9=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=27\\x=-9\end{cases}}\)
\(\left(-x\right).\left(x-43\right)=0\)
\(\Rightarrow\orbr{\begin{cases}-x=0\\x-43=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=0\\x=43\end{cases}}\)