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Which linear expression is a factor or zero: test each candidate root

This type of question, asked 7 times: CDS 1 2017, CDS 2 2017, CDS 1 2018, CDS 1 2021, CDS 2 2021, CDS 2 2025, CDS 1 2026. All 7 questions below, oldest first.

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  1. Question 1

    CDS 1 2017

    2
    (x+4)(x + 4) is a factor of which one of the following expressions ?

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  2. Question 2

    CDS 2 2017

    3
    What are the factors of x3+4x2−11x−30x^3 + 4x^2 - 11x - 30 ?

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  3. Question 3

    CDS 1 2018

    13
    Which one of the following is a zero of the polynomial 3x3+4x2−73x^3 + 4x^2 - 7?

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  4. Question 4

    CDS 1 2021

    25
    4x3+12x2−x−34x^3 + 12x^2 - x - 3 is divisible by

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  5. Question 5

    CDS 2 2021

    2
    Which one of the following is a factor of the polynomial (x−1)(x−2)(x−4)−90(x-1)(x-2)(x-4)-90 ?

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  6. Question 6

    CDS 2 2025

    9
    (x+2)(x+2) is a factor of which one of the following?

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  7. Question 7

    CDS 1 2026

    8
    Which of the following expressions can divide both the polynomials x3+2x2−5x+2x^3 + 2x^2 - 5x + 2 and x3+4x2+x−6x^3 + 4x^2 + x - 6 exactly ? I. x−1x - 1 II. x+1x + 1 III. x+2x + 2 Select the correct answer using the code given below :

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