MBA
Exam
A student by trial discovers one -ve and 2 +ve roots of the equation,x^5 - 9x^4 + 13x^3 + 57x^2 - 86x - 120 = 0.How many non-real roots does the equation have?Please explain. 1) 2 2) 1 3) 0 4) 4 5) None of these
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