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      Question

      What is the simplified form of the expression (1 + x)

      (1+x²) (1 + x4) (1 + x8) (1 – x)?
      A 1 – x^40 Correct Answer Incorrect Answer
      B 1 – x^32 Correct Answer Incorrect Answer
      C 1 – x^16 Correct Answer Incorrect Answer
      D 1 – x^42 Correct Answer Incorrect Answer

      Solution

      ATQ, (1+x)(1+x2)(1+x4)(1+x8)(1−x) ⇒(1−x2)(1+x2)(1+x4)(1+x8) ⇒(1−x4)(1+x4)(1+x8) ⇒(1−x8)(1+x8) ⇒(1−x16)

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