প্রশ্নঃ
a4 + 4 এর উৎপাদক কি কি?
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ক.
(a2 + 2a + 2)(a2 + 2a - 2)
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খ.
(a2 + 2a + 2)(a2 - 2a + 2)
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গ.
(a2 - 2a + 2)(a2 + 2a - 2)
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ঘ.
(a2 - 2a - 2)(a2 - 2a + 2)
উত্তরঃ খ
 (a2 + 2a + 2)(a2 + 2a - 2) খ) (a2 + 2a + 2)(a2 - 2a + 2) গ) (a2 - 2a + 2)(a2 + 2a - 2) ঘ) (a2 - 2a - 2)(a2 - 2a + 2) উত্তর: খ) (a2 + 2a + 2)(a2 - 2a + 2)
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