(2/x+y)-(2/x-y) 化简

来源:学生作业学帮网 编辑:学帮网 时间:2024/07/03 01:00:35

(2/x+y)-(2/x-y) 化简

(2/x+y)-(2/x-y)
=(2x-2y)/(x^2-y^2)-(2x+2y)/(x^2-y^2)
=-4y/(x^2-y^2)