a3 - 6a2 + 12a - 9 এর উৎপাদক-
Correct Answer: Option B
a3 - 6a2 + 12a - 9
= a3 - 6a2 + 12a - 8-1
= a3 - 3.a2.2 + 3.a.22 - 23 -1
= (a-2)3-1
= (a-2)3-13
= (a-2-1) {(a-2)2+(a-2)1 + 12}
= (a-3) (a2-2a.2+4+a-2+1)
= (a-3) (a2-4a+4+a -1)
= (a-3) (a2 - 3a +3)
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