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若不等式ax2+bx+2>0的解集是{x|-<x<},则a+b的值为( ) A....
若不等式ax
2+bx+2>0的解集是{x|-
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<x<
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},则a+b的值为( )
A.-10
B.-14
C.10
D.14
考点分析:
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