`1) x^2-4x+4=5(x-2)`
`=> (x-2)^2=5(x-2)`
`=> (x-2)^2-5(x-2)=0`
`=> (x-2)(x-2-5)=0`
`=> (x-2)(x-7)=0`
`=>` \(\left[ \begin{array}{l}x-2=0\\x-7=0\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x=2\\x=7\end{array} \right.\)
`2) 2x(x-3)+x^2-9=0`
`=> 2x(x-3)+x^2-3^2=0`
`=> 2x(x-3)+(x-3)(x+3)=0`
`=> (x-3)(2x+x+3)=0`
`=> (x-3)(3x+3)=0`
`=>` \(\left[ \begin{array}{l}x-3=0\\3x+3=0\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x=3\\x=-1\end{array} \right.\)
