Multiple Choice Questions on I 20x sup2 119x 176 0 II 45y sup2 200y 155 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

I 20x sup2 119x 176 0 II 45y sup2 200y 155 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    I) 20x²-119x+176=0

    II) 45y²+200y+155=0

    x < y

    Incorrect Answer

    x<=y

    Incorrect Answer

    x>y

    Correct Answer

    relationship between x and y cannot be determined

    Incorrect Answer
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    Explanation:

    I) 20x²-119x+176=0
    20x²-64x-55x+176=0
    4x(5x-16)-11(5x-16)=0
    (4x-11)(5x-16)=0
    x=11/4,16/5
    II)45y²+200y+155=0
    45y²+45y+155y+155=0
    45y(y+1)+155(y+1)=0
    (45y+155)(y+1)=0
    y=-155/45,-1
    Hence, x > y

    By: Amit Kumar
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