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(2002•荆州)下列说法不正确的是( ) A.只有当x=1时,分式的值才为零 ...
(2002•荆州)下列说法不正确的是( )
A.只有当x=1时,分式
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232550768596924/SYS201310212325507685969013_ST/0.png)
的值才为零
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232550768596924/SYS201310212325507685969013_ST/1.png)
与2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232550768596924/SYS201310212325507685969013_ST/2.png)
是同类二次根式
C.等腰三角形底边上的中线与底边上的高重合
D.三点确定一个圆
考点分析:
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