x²-7x+12 এর একটি উৎপাদক (x-3) হলে অপরটি কত?

A x+3

B x-4

C x+4

D x-3

Solution

Correct Answer: Option B

x²-7x+12
=x²-4x-3x+12
=x(x-4)-3(x-4)
=(x-4)(x-3)

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