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[" 2.6) If "z^(3)+(3+2i)z+(-1+ia)=0" has...

[" 2.6) If "z^(3)+(3+2i)z+(-1+ia)=0" has one renl root,then the value of 'a' lies in the interval "(a in R)],[[" (A) "(-2,-1)," (B) "(-1,0)," (C) "(0,1)," (D) "(1,2)]]

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