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10th Class Mathematics Polynomials Question Bank MCQs - Polynomials

  • question_answer
    Zeroes of \[p\left( z \right)={{z}^{2}}-27\]are ............ and ............

    A) \[\pm \,3\sqrt{3}\]

    B) \[+3\]

    C) \[+9\]

    D) \[+\sqrt{3}\] and \[-\sqrt{3}\]

    Correct Answer: A

    Solution :

    \[p\left( z \right)=0\]
    \[{{z}^{2}}-27=0\]
    \[{{z}^{2}}=27\]
    \[{{\left( z \right)}^{2}}=27\]
    \[z=\pm 3\sqrt{3}\]


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