(x - 3)(5x + 4) একটি সমীকরণের উৎপাদক হলে সমীকরণটি ---

A    x3 - 15x - 14 = 0

B    5x2 - 11x - 12 = 0

C    11x2 + 16x - 15 = 0

D    কোনটাই নয়

Solution

Correct Answer: Option B

 

(x - 3)(5x + 4)  =5x2+4x-15x-12 =5x2 - 11x - 12 

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