(x^2-y^2)⼀xy=2 (x-y)⼀(x+y)=?

2025-03-06 19:42:06
推荐回答(2个)
回答1:

[(x+y)*(x-y)]/(xy)=2 (x-y)/(x+y)约去(x-y)得到(x+y)^2=2xy,展开得到x^2+y^2=0,x=0,y=0,

回答2:

图片看到没