x^2-y^2=(x+y)(x-y)=40
x+y=8/5
x-y=25
若X的平方-Y的平方=40,X+Y=5分之8,则X-Y=?
若X的平方-Y的平方=40,X+Y=5分之8,则X-Y=?
数学人气：248 ℃时间：2020-04-08 16:46:29
优质解答
我来回答
类似推荐
猜你喜欢
- 1In 2004, India's software exports reached us$17.3 billion,about five times that of China
- 2某商场为了促销某种品牌的空调,规定在2009年国庆期间购买该款机型可分为两期付款,要求在购买时现付一笔
- 3英文高手进..帮忙翻译下,
- 4—What are you searching the Internet for?.— I’m trying to find out ________ .
- 5I wish you to study hard.是简单句还是复合句
- 6John doesn't like study.He does his homework _______.(care)
- 7what do you call it in englishi
- 822 He is known to the world and has a lot of friends_______ A .in and out of abroad B .at home and abroadC.at home and a
- 9I'M doing a survey adout learning English can I ask you some questions?
- 10have to 的否定形式