>
数学
>
已知(x²+y²)(x²+y²-1)=6,求x²+y²的值
人气:208 ℃ 时间:2020-05-18 05:21:10
解答
(x²+y²)(x²+y²-1)=6
(x²+y²)²-(x²+y²)-6=0
(x²+y²-3)(x²+y²+2)=0
x²+y²=3 或x²+y²=-2(舍)
x²+y²=3
如果本题有什么不明白可以追问,如果满意请点击“选为满意答案”
推荐
已知(x²+y²)²-y²=x²+6求x²+y²的值
已知x-y=2,x²-y²=6,求x、y的值
已知x-y=2则代数式6-x+y-(y-x)²的值是多少
已知(x+y)²=25,xy=6,求x-y的值.
已知x-y=2,x²+y²=6,求3xy的值
The gap's being closed easily enables people to enjoy...
英语:so far this year we () a fall in house prices by between 3 and 5 percent
I hate those people who like to take sth out of nothing.
猜你喜欢
求读书笔记有好词佳句阅读感悟内容概要
一袋米80千克,第一天吃去4分之1,第二天吃去5分之2,两天共吃几千克
要使(ax^2-3x)(x^2-2x+1)的展开式中不含x^3项,则a=
红铅笔1支1.9元,蓝铅笔1支1.1元.两种铅笔共买了16支共花了28元.问红/蓝铅笔共买了几支?
铅蓄电池:Pb+PbO2+2H2SO4=2PbSO4+2H2O(1)写出电极反应式
解分段函数基本思路概念 填空
be willing to 后加什么
I was surprised to see my pet cat was still [ ] after the fire.填什么?
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版