(x/x-2-x/x+2)/4x/x-2

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/21 17:38:48
(x/x-2-x/x+2)/4x/x-2(x/x-2-x/x+2)/4x/x-2(x/x-2-x/x+2)/4x/x-2(x/x-2-x/x+2)÷4x/x-2=[x(x+2)-x(x-2)]/(x+

(x/x-2-x/x+2)/4x/x-2
(x/x-2-x/x+2)/4x/x-2

(x/x-2-x/x+2)/4x/x-2
(x/x-2-x/x+2)÷ 4x/x-2
=[x(x+2)-x(x-2)]/(x+2)(x-2)×(x-2)/4x
=4x/(x+2)(x-2) ×(x-2)/4x
=1/(x+2)