x+y分之一与x-y分之一通分,要快点,谢谢。
答案:5 悬赏:10 手机版
解决时间 2021-02-17 10:14
- 提问者网友:美人性情
- 2021-02-16 16:37
x+y分之一与x-y分之一通分,要快点,谢谢。
最佳答案
- 五星知识达人网友:孤独入客枕
- 2021-02-16 16:59
1/(x+y)=(x-y)/(x²-y²
1/(x-y)=(x+y)/(x²-y²
1/(x-y)=(x+y)/(x²-y²
全部回答
- 1楼网友:低血压的长颈鹿
- 2021-02-16 22:03
x×y啦,因为x×y的答案才是最准确的啦
- 2楼网友:山河有幸埋战骨
- 2021-02-16 20:29
解:∵最简公分母为(x+y)(x-y)
∴x+y/1=(x+y)(x-y)/1×(x-y)=(x+y)(x-y)/x-y (记住不要化简)
∴x-y/1=(x+y)(x-y)/1×(x+y)=(x-y)(x+y)/x-y (“/”是分十一)
∴x+y/1=(x+y)(x-y)/1×(x-y)=(x+y)(x-y)/x-y (记住不要化简)
∴x-y/1=(x+y)(x-y)/1×(x+y)=(x-y)(x+y)/x-y (“/”是分十一)
- 3楼网友:一袍清酒付
- 2021-02-16 19:13
(X²-Y²)分之(X-Y)和(X²-Y²)分之(X+Y)
- 4楼网友:孤老序
- 2021-02-16 18:16
你好
1/(x+y)+1/(x-y)
=(x-y)/(x+y)(x-y)+(x+y)/(x-y)(x+y)
=[(x-y)+(x+y)]/(x+y)(x-y)
=2x/(x²-y²)
【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
1/(x+y)+1/(x-y)
=(x-y)/(x+y)(x-y)+(x+y)/(x-y)(x+y)
=[(x-y)+(x+y)]/(x+y)(x-y)
=2x/(x²-y²)
【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息,可以点下面链接进行举报!
大家都在看
推荐资讯