若 √﹙a²-3a+1﹚+b²+2b+1=0,则a²+﹙1/a²﹚-|b|=____.根号下管到a²-3a+1﹙1/a²﹚的意思是a²分之1|b|是b的绝对值____请输入得数
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 16:42:48
![若 √﹙a²-3a+1﹚+b²+2b+1=0,则a²+﹙1/a²﹚-|b|=____.根号下管到a²-3a+1﹙1/a²﹚的意思是a²分之1|b|是b的绝对值____请输入得数](/uploads/image/z/1758333-21-3.jpg?t=%E8%8B%A5+%E2%88%9A%EF%B9%99a%26%23178%3B%EF%BC%8D3a%2B1%EF%B9%9A%2Bb%26%23178%3B%2B2b%2B1%3D0%2C%E5%88%99a%26%23178%3B%EF%BC%8B%EF%B9%991%EF%BC%8Fa%26%23178%3B%EF%B9%9A%EF%BC%8D%7Cb%7C%3D%EF%BC%BF%EF%BC%BF%EF%BC%BF%EF%BC%BF%EF%BC%8E%E6%A0%B9%E5%8F%B7%E4%B8%8B%E7%AE%A1%E5%88%B0a%26%23178%3B%EF%BC%8D3a%2B1%EF%B9%991%EF%BC%8Fa%26%23178%3B%EF%B9%9A%E7%9A%84%E6%84%8F%E6%80%9D%E6%98%AFa%26%23178%3B%E5%88%86%E4%B9%8B1%7Cb%7C%E6%98%AFb%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%EF%BC%BF%EF%BC%BF%EF%BC%BF%EF%BC%BF%E8%AF%B7%E8%BE%93%E5%85%A5%E5%BE%97%E6%95%B0)
若 √﹙a²-3a+1﹚+b²+2b+1=0,则a²+﹙1/a²﹚-|b|=____.根号下管到a²-3a+1﹙1/a²﹚的意思是a²分之1|b|是b的绝对值____请输入得数
若 √﹙a²-3a+1﹚+b²+2b+1=0,则a²+﹙1/a²﹚-|b|=____.
根号下管到a²-3a+1
﹙1/a²﹚的意思是a²分之1
|b|是b的绝对值
____请输入得数
若 √﹙a²-3a+1﹚+b²+2b+1=0,则a²+﹙1/a²﹚-|b|=____.根号下管到a²-3a+1﹙1/a²﹚的意思是a²分之1|b|是b的绝对值____请输入得数
√﹙a²-3a+1﹚+b²+2b+1=0,
则 √﹙a²-3a+1﹚+(b+1)²=0,
则√﹙a²-3a+1﹚=0
a²-3a+1=0
a=(3±√5)/2
a²=(7±3√5)/2
1/a²=(7-+3√5﹚/2
(b+1)²=0 b=-1
则a²+﹙1/a²﹚-|b|=7-1=6