(2⼀x+y)-(2⼀x-y) 化简

2025-12-06 08:43:42
推荐回答(1个)
回答1:

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