(x-y分之x减x-y分之2y)乘x-2y分之xy 除(x分之1+y分之1) 在此先谢谢各位了

2025-03-07 03:53:34
推荐回答(1个)
回答1:

(x-y分之x减x-y分之2y)乘x-2y分之xy 除(x分之1+y分之1)
=(x-2y)/(x-y)*xy/(x-2y)*xy/(x+y)
=x²y²/(x²-y²)