A：最简公分母是（x﹣2）（x+3）²

B：$\frac{1}{x-2}$=$\frac{{\left(x+3\right)}^2}{\left(x-2\right){\left(x+3\right)}^2}$

C：$\frac{1}{\left(x-2\right)\left(x+3\right)}$=$\frac{x+3}{\left(x-2\right)\left(x+3\right)}$

D：$\frac{2}{{\left(x+3\right)}^2}$=$\frac{2x-2}{\left(x-2\right){\left(x+3\right)}^2}$