(2007•济南)不等式2x+1>0的解集是 .
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(2007•济南)世界上著名的莱布尼茨三角形如图所示,则排在第10行从左边数第3个位置上的数是( )
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A.
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B.
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C.
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D.
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(2007•济南)已知整式6x-1的值是2,y
2-y的值是2,则(5x
2y+5xy-7x)-(4x
2y+5xy-7x)=( )
A.
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或-
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B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409010_ST/2.png)
或
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409010_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409010_ST/4.png)
或
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409010_ST/5.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409010_ST/6.png)
或
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(2007•济南)已知y=ax
2+bx的图象如图所示,则y=ax-b的图象一定过( )
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A.第一、二、三象限
B.第一、二、四象限
C.第二、三、四象限
D.第一、三、四象限
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(2007•济南)已知:如图△ABC的顶点坐标分别为A(-4,-3),B(0,-3),C(-2,1),如将B点向右平移2个单位后再向上平移4个单位到达B
1点,若设△ABC的面积为S
1,△AB
1C的面积为S
2,则S
1,S
2的大小关系为( )
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A.S
1>S
2B.S
1=S
2C.S
1<S
2D.不能确定
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(2007•济南)计算
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409007_ST/0.png)
的结果为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409007_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454987440972/SYS201310191104549874409007_ST/3.png)
D.
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