化简 根号下（x+4)²+y² =10- 根号下（x-4)²+y²
题目
化简 根号下（x+4)²+y² =10- 根号下（x-4)²+y²
答案
这是椭圆的方程,平方后移项再平方,就能化为标准形式：x^2/25+y^2/9=1 .
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
- She gives Olive a wink with one eye意思
- Why do they come here? ____ do they come here ____? (句型转化 一词）
- 4ab-5-3a的平方b是几次几项式
- 英语高手看下这个句子.1 We are expecting reaching --- approximate 30 minutes .几个地方错了?
- 一项工程,甲独做20天完成,乙独做30天完成,甲乙合做几天完成这项工程的1/2
- by,can,pass,you,me,the,letter,the,way（?）连词成句,
- 背英语单词的方法
- The _____ we can’t work out now is that we have too many ____ to ask now.
- 水结冰后重量会变吗?
- YYou will not be allowed to join the queue because you are currently assigned to an existing game
热门考点