Multiple Choice Questions on The product of the polynomials x 2 x ndash 2 x3 2x2 4x 8 and x3 2x2 4x 8 is ........ for CDS Exam Preparation

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Multiple Choice Questions

The product of the polynomials x 2 x ndash 2 x3 2x2 4x 8 and x3 2x2 4x 8 is ........

Quantitative Aptitude (CDS) Algebra
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    The product of the polynomials (x + 2), (x – 2), (x3 - 2x2 + 4x - 8) and (x3 + 2x2 + 4x + 8) is

    x8 – 256

    Incorrect Answer

    (x4 - 16)2

    Correct Answer

    (x4 + 16)2

    Incorrect Answer

    (x2 – 4)4

    Incorrect Answer
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    Explanation:

    As,
    (x+2) (x−2)=(x2−22)=(x2−4) ………(i)
    (x3 - 2x2 + 4x - 8) and (x3 + 2x2 + 4x + 8)

    By: Munesh Kumari
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