\(\int\dfrac{3x-2}{\left(x-2\right)^2}dx\)
Đặt \(x-2=u\Rightarrow x=u+2\Rightarrow dx=du\)
\(I=\int\dfrac{3\left(u+2\right)-2}{u^2}du=\int\dfrac{3u+4}{u^2}du=\int\left(\dfrac{3}{u}+\dfrac{4}{u^2}\right)du\)
\(=3ln\left|u\right|-\dfrac{4}{u}+C\)
\(=3ln\left|x-2\right|-\dfrac{4}{x-2}+C\)