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化简:2x/(x²-4y²)+2/(2y-x)+1
题目详情
化简:2x/(x²-4y²)+2/(2y-x)+1
▼优质解答
答案和解析
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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=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)
很高兴为您解答,【学习宝典】团队为您答题.
请点击下面的【选为满意回答】按钮,
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