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1 . 4x4+1

A. $(2 x^{2} + 2 x + 1) (2 x^{2} - 2 x - 1)$
B. $(2 x^{2} + 2 x - 1) (2 x^{2} - 2 x + 1)$
C. $(2 x^{2} + 2 x + 1) (2 x^{2} - 2 x + 1)$
D. $(2 x^{2} + 2 x - 1) (2 x^{2} - 2 x - 1)$

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Answer: Option C

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প্রাথমিক বিদ্যালয় সহকারী শিক্ষক নিয়োগ পরীক্ষা-2018-(১২ জেলা-৮১৬১-04) (24-04-2018)

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2 . The factor of 4x4+1 is

A. $(2 x^{2} + 2 x - 1) (2 x^{2} - 2 x + 1)$
B. $(2 x^{2} + 2 x + 1) (2 x^{2} - 2 x + 1)$
C. $(2 x^{2} + 2 x - 1) (2 x^{2} - 2 x - 1)$
D. $(2 x^{2} + 2 x + 1) (2 x^{2} - 2 x - 1)$

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Answer: Option B

Explanation: