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If equation x^5+10x^2+x+5=0 has one root...

If equation `x^5+10x^2+x+5=0` has one roots as alpha then (A) `[alpha]=-3 `(where [.] denotes the greatest integer function) (B) number of roots between -2 and -1 is three (C) number of real roots is 3 (D) equation has at least one positive root

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