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Question

কোন শর্তে

a x^{2} + 5 x + c = 0

সমীকরণের উভয়মূল যোগবোধক হবে?

a>0 , c> 0

a> 0 , c<0

a<0, c<0

a<0, c> 0

ANS : 3

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