\(x^2.\left(x-1\right)-4x^2+8x-4=0\)
\(x^2\left(x-1\right)-\left(4x^2-4x\right)+\left(4x-4\right)=0\)
\(x^2\left(x-1\right)-4x\left(x-1\right)+4\left(x-1\right)=0\)
\(\left(x^2-4x+4\right)\left(x-1\right)=0\)
\(\left(x-2\right)^2.\left(x-1\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-2=0\\x-1=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=2\\x=1\end{cases}}\)
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X2.(x-1)-4x2+8x-4=0
=>x2(x-1)-4x2+4x+4x-4=0
=>x2(x-1)-4x(x-1)-4(x-1)=0
=>x2(x-1)-(4x-4)(x-1)=0
=>(x2-4x+4)(x-1)=0
=>(x-2)2(x-1)=0
=>x=2 hoặc x=1
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