作业帮已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,注意是4x2-4y2,
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/05 22:43:23
![已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,注意是4x2-4y2,](/uploads/image/z/1260777-57-7.jpg?t=%E5%B7%B2%E7%9F%A5%5B%28x2%2By2%29-%28x-y%292%2B2y%28x-y%29%5D%C3%B74y%3D1%2C%E6%B1%824x%2F4x2-4y2-1%2F2x%2By%E7%9A%84%E5%80%BC%2C%E6%B3%A8%E6%84%8F%E6%98%AF4x2-4y2%2C)
x){}K5*+4u5*t+5*M*m
uml2705457Ю|>i gW
已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,注意是4x2-4y2,
已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,
注意是4x2-4y2,
已知[(x2+y2)-(x-y)2+2y(x-y)]÷4y=1,求4x/4x2-4y2-1/2x+y的值,注意是4x2-4y2,
[（x^2+y^2）-(x-y)^2+2y(x-y)]÷4y=1
（x^2+y^2-x^2+2xy-y^2+2xy-2y^2）÷4y=1
（4xy-2y^2）4y=1
2x-y=2
4x/(4x^2-y^2)-1/(2x+y)=4x/（2x+y)（2x-y）-1/(2x+y)
=（4x-2x+y）/（2x+y)（2x-y）
=（2x+y）/（2x+y)（2x-y）
=1/(2x-y)
=1/2
你要注意的4x2-4y2是什么意思 在做了