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x2- ax + b = 0 সমীকরণের মূলদ্বয় m ও n হলে-

(i) m + n = a 

(ii) mn = b

(iii) m ও n এর মান = -a±a2-4b2

নিচের কোনটি সঠিক?

Created: 1 month ago | Updated: 1 month ago

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