化简:2x/(x²-4y²)+2/(2y-x)+1

化简:2x/(x²-4y²)+2/(2y-x)+1
化简:2x/(x²-4y²)+2/(2y-x)+1

化简:2x/(x²-4y²)+2/(2y-x)+1
2x/(x²-4y²)+2/(2y-x)+1
=2x/[(x+2y)(x-2y)]-2/(x-2y)+1
=[2x-2(x+2y)]/[(x+2y)(x-2y)]+1
=(2x-2x-4y)/[(x+2y)(x-2y)]
=1-4y/(x²-4y²)
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