(2010•眉山)一元二次方程2x2-6=0的解为 .
考点分析:
相关试题推荐
(2010•眉山)某班一个小组七名同学在为地震灾区“爱心捐助”活动中,捐款数额分别为:10,30,40,50,15,20,50(单位:元).这组数据的中位数是
(元).
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928011_ST/images0.png)
(2010•眉山)如图,已知双曲线y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928011_ST/0.png)
(k<0)经过直角三角形OAB斜边OA的中点D,且与直角边AB相交于点C.若点A的坐标为(-6,4),则△AOC的面积为( )
A.12
B.9
C.6
D.4
查看答案
(2010•眉山)打开某洗衣机开关,在洗涤衣服时(洗衣机内无水),洗衣机经历了进水、清洗、排水、脱水四个连续过程,其中进水、清洗、排水时洗衣机中的水量y(升)与时间x(分钟)之间满足某种函数关系,其函数图象大致为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928010_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928010_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928010_ST/images2.png)
D.
查看答案
(2010•眉山)已知方程x
2-5x+2=0的两个解分别为x
1、x
2,则x
1+x
2-x
1•x
2的值为( )
A.-7
B.-3
C.7
D.3
查看答案
(2010•眉山)下列四个图中,是三棱锥的表面展开图的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928008_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928008_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230519694492897/SYS201310212305196944928008_ST/images2.png)
D.
查看答案