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第465题:选择



1x2\dfrac{1}{x-2}1(x2)(x+3)\dfrac{1}{(x-2)(x+3)}2(x+3)2\dfrac{2}{(x+3)^2} 通分的过程中,不正确的是( ).



A. 最简公分母是(x2)(x+3)2(x-2)(x+3)^2


B. 1x2=(x+3)2(x2)(x+3)2\dfrac{1}{x-2} = \dfrac{(x+3)^2}{(x-2)(x+3)^2}


C. 1(x2)(x+3)\dfrac{1}{(x-2)(x+3)} =x+3(x2)(x+3)2= \dfrac{x+3}{(x-2)(x+3)^2}


D. 2(x+3)2\dfrac{2}{(x+3)^2} =2x2(x2)(x+3)2= \dfrac{2x-2}{(x-2)(x+3)^2}




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