先化简,再求值:(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164306409536824/SYS201310221643064095368015_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164306409536824/SYS201310221643064095368015_ST/1.png)
)÷
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164306409536824/SYS201310221643064095368015_ST/2.png)
,其中x=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164306409536824/SYS201310221643064095368015_ST/3.png)
+1.
考点分析:
相关试题推荐
如图,E、F在双曲线y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164306409536824/SYS201310221643064095368014_ST/0.png)
上,FE交y轴于A点,AE=EF,FM⊥x轴于M,若S
△AME=2,则k=
.
查看答案
破译密码v w X g h q w 为student,联想英语字母寻找破译它的密码钥匙.(从A到Z)再根据这个规律破译o r y h 为英语单词
.
查看答案
如图,点B是⊙O的半径OA的中点,且CD⊥OA于B,则tan∠CPD的值为
.
查看答案
将矩形ABCD沿AE折叠,得到如图所示的图形,已知∠CED′=60°,则∠BAD′的大小是
.
查看答案
如图,∠ACB=60°,半径为1cm的⊙O切BC于点C,若将⊙O在CB上向右滚动,则当滚动到⊙O与CA也相切时,圆心O移动的水平距离是
cm.
查看答案