约分（6ab²)/(8b³)(x³-2x²y)/(x²y-2xy²)（6ab²)/(8b³)(x³-2x²y)/(x²y-2xy²)(16b²y²)/(20ay³)(x²+6x+9)/(x²-9)(m³-2m²-m)/(m²-m)(a&am
1人问答
问题描述：
约分（6ab²)/(8b³)(x³-2x²y)/(x²y-2xy²)
（6ab²)/(8b³)(x³-2x²y)/(x²y-2xy²)(16b²y²)/(20ay³)(x²+6x+9)/(x²-9)(m³-2m²-m)/(m²-m)(a²+ab)/(a²-b²)约分
廖常初回答：
（6ab²)/(8b³)=3a/4b(x³-2x²y)/(x²y-2xy²)=x²(x-2y)/xy(x-2y)=x/y(16b²y²)/(20ay³)=4b²/(5ay)(x²+6x+9)/(x²-9)=(x+3)²/(x+3)(x-3)=(x+3)...
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