x4 + x2 + 1 এর একটি উৎপাদক কোনোটি?

A (x2 + x + 2)

B (x4 + x + 1)

C (x2 +2x + 1)

D (x2 + x + 1)

Solution

Correct Answer: Option D

x4 + x2 + 1
= (x2)2 + 2x2 + 1 - x2
= (x2 + 1)2 - x2
=(x2 + x + 1)(x2 - x + 1)

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