计算1-(x-2y/x+2y)/(x^2-y^2/4xy-x^2-4y^2)

分类: 作业答案 • 2022-01-09 18:03:33

问题描述：

答

1-[(x-2y)/(x+2y)] * [(x+y)(x-y)]/-[(x-2y)^2]
=1+(x^2-y^2)/(x^2-4y^2)