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10th Class Mathematics Polynomials Question Bank MCQs - Polynomials

  • question_answer
    Lowest value of \[{{x}^{2}}+4x+2\] is:

    A) \[0\]

    B) \[-2\]

    C) \[2\]

    D) \[4\]

    Correct Answer: B

    Solution :

    [b]\[{{x}^{2}}+4x+2=({{x}^{2}}+4x+4)-2={{(x+2)}^{2}}-2\]
    Lowest value \[=-2\]
    When, \[x+2=0\]


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