2x2 - x – 3 এর একটি উৎপাদক কোনটি?  

A    (2x –3)(x+1)

B    (2x-3)(x-1)

C    (2x+3)(x+1)

D    (2x+3)(x-1)

Solution

Correct Answer: Option A

 

সমাধান: 2x2 -x - 3 = 2x2-3x + 2x-3

                         =x(2x-3)+1(2x-3)

                         =(2x-3)(x+1)

 

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