-b=√3-2
b=2-√3
所以a=1/(2-√3)
=(2+√3)/(2+√3)(2-√3)
=(2+√3)/(4-3)
=2+√3
猜你喜欢
- 1if you want to make friends with a new c----you can talk with him(根据首字母填空）
- 2l love reading because i want to learn more about the w___.
- 3I remember all the thing that we shared and the way you smile at me
- 4"Just because you like my stuff doesn't mean I owe you anything." -
- 5I always do my homework for __and then I do some reading.
- 6柳暗花明又一村出自____________（填作者）的《 》一诗,其上句是''___
- 7如图,S1,S2,S3,分别是以直角三角形的半圆面积,且S2是S1的2倍,S3=9,则S1等于（） A:2 B:1 C:6 D:3
- 8German guest 的复数为什么是Germans guests
- 91度电=多少万千瓦时
- 10变化的磁场(电场)产生的电场(磁场)的方向如何判定?