求大神!!!!!!!!!!!!!!!!!!! 1个回答 #热议# 发烧为什么不能用酒精擦身体来退烧? 风雨人生路1991 2014-09-27 · TA获得超过260个赞 知道答主 回答量:56 采纳率:0% 帮助的人:33.4万 我也去答题访问个人页 关注 展开全部 两式相减-》x^2-y^2+y-x=0 => x^2-y^2-(x-y)=0 =>(x+y)(x-y)-(x-y)=0 =>(x+y-1)(x-y)=0=>x+y-1=0或x-y=0,若x-y=0,即x=y =>x^2+x*x+x=0 =>x=0=y =>x+y=0若x-y不为零则有x+y-1=0,即x+y=1综上所述x+y值为 0或1 追问 thank you 本回答由提问者推荐 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 推荐律师服务: 若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询 其他类似问题 2010-12-31 跪求!!!!!!!!!!!!!!!!! 2 2013-03-10 求教啊!!!!!!!!!!!!!!!!!!! 2012-12-01 急求!!!!!!!!!!!!!!!!!!!!! 1 2013-01-18 跪求!!!!!!!!!!!!!!!!!!!!!!! 2 2013-12-24 求解!!!!!!!!!!!!!!!!!!!!!! 3 2014-09-09 求大神!!!!!!!!!!!!!!!!!! 2014-06-14 求求大神!!!!!!!!!!!!!!!! 2014-04-30 求大神!!!!!!!!!!!!!!!!!!!!!!!!!! 为你推荐: