1.

Assertion: The polynomial 5x^9+3x^5-x^4-2x^2+5 has atleast six imaginary roots. Reason: Descretes rule of sign.

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(R) is ONE of the reason of prove (A)
Find maximum no. of positive roots , thenfind maximum no. of negative roots. Using (R) and hence (A) can be proved .
(A) is WRONG
(R) cannot give CURRENT DISCUSSION to SOLVE (A)

Answer :B


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