\(x^3-8x^2+16x-8\)
\(=x^3-2x^2-6x^2+12x+4x-8\)
\(=x^2\left(x-2\right)-6x\left(x-2\right)+4\left(x-2\right)\)
\(=\left(x-2\right)\left(x^2-6x+4\right)\)
ta có : \(x^3-8x^2+16x-8=x^3-2x^2-6x^2+12x+4x-8\)
\(=x^2\left(x-2\right)-6x\left(x-2\right)+4\left(x-2\right)=\left(x^2-6x+4\right)\left(x-2\right)\)