3x2 - 7x - 6 এর উৎপাদক  

A    (3x-2)(x+3)

B    (3x+2)(x-3)

C    (3x-2)(x-3)

D    কোনটি ই নয়

Solution

Correct Answer: Option B

 

3x2 - 7x - 6

f(3)=3(3)2-7(3)-6

    =27-21-6

    =0

অতএব, x-(3)=x-3, 3x2 - 7x - 6 এর একটি উৎপাদাক

এখন, 3x2 - 7x - 6

     =3x2 -9x+2x-6

     =3x(x-3)+2(x-3)

     =(x-3)(3x+2)    

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