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[" If the equation "|x^(2)-2x-3|=m" has ...

[" If the equation "|x^(2)-2x-3|=m" has exactly two real solutions then the set of values of "m" ,"],[[" (A) "(0,4)," (B) "(4,oo)," (C) "(4,oo)uu{0}," (D) "(0,oo)]]

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