若分式
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103013_ST/0.png)
有意义,则x≠
.
考点分析:
相关试题推荐
在△ABC中,∠BAC=90°,AB=3,AC=4.AD平分∠BAC交BC于D,则BD的长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103011_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103011_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103011_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103011_ST/2.png)
D.
查看答案
如图,点P(a,a)是反比例函数y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103010_ST/0.png)
在第一象限内的图象上的一个点,以点P为顶点作等边△PAB,使A、B落在x轴上,则△POA的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103010_ST/images1.png)
A.3
B.4
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103010_ST/1.png)
D.
查看答案
小明在测量楼高时,先测出楼房落在地面上的影长BA为15米(如图),然后在A处树立一根高2米的标杆,测得标杆的影长AC为3米,则楼高为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193500324110352/SYS201311011935003241103009_ST/images0.png)
A.10米
B.12米
C.15米
D.22.5米
查看答案
下列式子是因式分解的是( )
A.x(x-1)=x
2-1
B.x
2-x=x(x+1)
C.x
2+x=x(x+1)
D.x
2-x=x(x+1)(x-1)
查看答案