计算 x²-6x+9/9-x²除以2x-6/x²+3x

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计算 x²-6x+9/9-x²除以2x-6/x²+3x
计算 x²-6x+9/9-x²除以2x-6/x²+3x

计算 x²-6x+9/9-x²除以2x-6/x²+3x
原式=-(x-3)²/(x+3)(x-3)×x(x+3)/2(x-3)
=-(x-3)/(x+3)×x(x+3)/2(x-3)
=-x/2

x²-6x+9/9-x²除以2x-6/x²+3x
=(x-3)²/(3-x)(3+x)×[x(x+3)/2(x-3)]
=-x/2