Multiple Choice Questions on Given that the polynomial x2 ax b leaves that same remainder when by x ndash 1 or x 1 What are the v........... for CDS Exam Preparation

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Multiple Choice Questions

Given that the polynomial x2 ax b leaves that same remainder when by x ndash 1 or x 1 What are the v...........

Quantitative Aptitude (CDS) Number System
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    Given that the polynomial (x2 + ax + b) leaves that same remainder when by (x – 1) or (x + 1) What are the values of a and b respectively?

    4 , 0

    Incorrect Answer

    0,3

    Incorrect Answer

    3,0

    Incorrect Answer

    0,  any integer

    Correct Answer
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    Explanation:

    Since x2 + ax + b when divided by x-1 or x+1 leaves the same remainder
    So on putting x=1 and x=-1 we get the same value
    1+a+b = 1-a+b
    2a=0
    a=0
    here b can take any value as it will always get cancelled out

    By: Munesh Kumari
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