Question

这道数学题怎么做11按要求答题。5-6题通分怎么做？

Answer 1

以解答

Answer 2

Answer 3

5)，分母分别是：
2（x-y）,x³y-x³y=xy(x²-y²)=xy(x-y)(x+y),
最简公分母为：2xy(x-y)(x+y),
通分为：
y/2(x-y)=y▪xy(x+y)/2xy(x-y)(x+y)=xy²(x+y)/2xy(x-y)(x+y);
1/(x³y-xy³)=2/2xy(x-y)(x+y);