在实数范围内因式分【解析】
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682010_ST/0.png)
=
.
考点分析:
相关试题推荐
已知方程组:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682009_ST/0.png)
的解x,y满足2x+y≥0,则m的取值范围是( )
A.m≥-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682009_ST/1.png)
B.m≥
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682009_ST/2.png)
C.m≥1
D.-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682009_ST/3.png)
≤m≤1
查看答案
如图,∠ACB=∠ADC=90°,BC=a,AC=b,AB=c,要使△ABC∽△CAD,只要CD等于( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682008_ST/2.png)
D.
查看答案
如图,P(x,y)是以坐标原点为圆心,5为半径的圆周上的点,若P都是整数点,则这样的点共有( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682007_ST/images0.png)
A.4个
B.8个
C.12个
D.16个
查看答案
若干桶方便面摆放在桌子上,实物图片左边所给的是它的三视图,则这一堆方便面共有( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682006_ST/images0.png)
A.5桶
B.6桶
C.9桶
D.12桶
查看答案
在△ABC中,点D,G分别在边AB,AC上,点E,F在边BC上.已知DG∥BC,DE∥FG,BE=DE,CF=FG,则∠A的度数( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164741106468244/SYS201310221647411064682005_ST/images0.png)
A.等于90°
B.等于80°
C.等于72°
D.条件不足,无法计算
查看答案