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Question

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

সমীকরণের মূলদ্বয় বাস্তব ও অসমান হলে কোনটি সত্য?

(b^{2} - 4 a c) < 0

(b^{2} - 4 a c) = 0

(b^{2} - 4 a c) = 0

(b^{2} - 4 a c) > 0

ANS : 4

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