由X/Y=2Y/X-Y 怎么解得x=2y?
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由X/Y=2Y/X-Y怎么解得x=2y?由X/Y=2Y/X-Y怎么解得x=2y?由X/Y=2Y/X-Y怎么解得x=2y?X/Y=2Y/X-Y两边乘Y(X-Y(X²-XY=2Y²X&
由X/Y=2Y/X-Y 怎么解得x=2y?
由X/Y=2Y/X-Y 怎么解得x=2y?
由X/Y=2Y/X-Y 怎么解得x=2y?
X/Y=2Y/X-Y
两边乘Y(X-Y(
X²-XY=2Y²
X²-XY-2Y²=0
(X-2Y)(X+Y)=0
所以X=2Y或X=-Y
X/Y=2Y/X-Y
两边乘Y(X-Y(
X²-XY=2Y²
X²-XY-2Y²=0
(X-2Y)(X+Y)=0
所以X=2Y或X=-Y