কোনটি 2x4 - 5x3 + 6x2 -5x + 2 এর একটি উৎপাদক?
Solution
Correct Answer: Option B
2x4 - 5x3 + 6x2 -5x + 2
= 2x4-2x3-3x3+3x2+3x2-3x-2x+2
=2x3(x-1)-3x2(x-1)+3x(x-1)-2(x-1)
=(x-1) (2x3-3x2+3x-2)
= 2x4-2x3-3x3+3x2+3x2-3x-2x+2
=2x3(x-1)-3x2(x-1)+3x(x-1)-2(x-1)
=(x-1) (2x3-3x2+3x-2)
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