Multiple Choice Questions on The minimum value of the expression 2x2 5x 5 is ........ for CDS Exam Preparation

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Multiple Choice Questions

The minimum value of the expression 2x2 5x 5 is ........

Quantitative Aptitude (CDS) Quadratic Equations
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    The minimum value of the expression 2x2 + 5x + 5 is

    5

    Incorrect Answer

    15/8

    Correct Answer

    -15/8

    Incorrect Answer

    0

    Incorrect Answer
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    Explanation:

    2x2+5x+5

    ax2+bx+5

    if a > 0 , Min value =( 4ac -b2)/4a

    = (4 x 2 x 5 - 25) / 8 = (40-25)/ 8 = 15/8

    By: Munesh Kumari
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