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1. a4 + 4 এর উৎপাদক কি কি?

  • A. (a2 + 2a + 2)(a2 + 2a - 2)
  • B. (a2 + 2a + 2)(a2 + 2a - 2)
  • C. (a2 + 2a + 2)(a2 + 2a - 2)
  • D. (a2 + 2a + 2)(a2 + 2a - 2)

Answer: Option B

Explanation:

a4 + 4

= (a2)2 + 2.a2.2 + (2)2 - 4a2

= (a2 + 2)2 - (2a)2

= (a2 + 2a + 2)(a2 - 2a + 2)

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