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已知实数x满足x2+=0,那么x+的值是( ) A.1或-2 B.-1或2 C....
已知实数x满足x
2+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539761386023/SYS201310221605397613860008_ST/0.png)
=0,那么x+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160539761386023/SYS201310221605397613860008_ST/1.png)
的值是( )
A.1或-2
B.-1或2
C.1
D.-2
考点分析:
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