10th Class Mathematics Polynomials Question Bank Case Based (MCQs) - Polynomials

  • question_answer
    What is the value of the correct polynomial if \[x=-1\]?

    A) \[-5+2\sqrt{3}\]

    B) \[5-2\sqrt{3}\]

    C) \[5-6\sqrt{3}\]

    D) \[-5+6\sqrt{3}\]

    Correct Answer: A

    Solution :

    Let correct polynomial be \[p(x)=4\sqrt{3}{{x}^{2}}+5x-2\sqrt{3}\]
    Tip - A real number a is said to be a zero of a polynomial, \[p(x)=a{{x}^{2}}+bx+c,\] if  \[a{{\alpha }^{2}}+b\alpha +c=0\]
    if \[x=-1,\],then
    So, option [a] is correct.

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