\(\left(x-2\right)^3-x^2.\left(x-6\right)=4\)
\(\Rightarrow x^3-3.x^2.2+3.x.2^2-2^3-\left(x^3-6x^2\right)=4\)
\(\Rightarrow x^3-6x^2+12x-8-x^3+6x^2=4\)
\(\Rightarrow12x-8=4\)
\(\Rightarrow12x=4+8\)
\(\Rightarrow12x=12\)
\(\Rightarrow x=12:12\)
\(\Rightarrow x=1\)
Vậy \(x=1.\)
Chúc bạn học tốt!