Multiple Choice Questions on 10m2 136m 14 0 25n2 10n 8 0 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

10m2 136m 14 0 25n2 10n 8 0 ........

Quantitative Aptitude ( CCS) Quadratic Equations
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    10m2-136m-14=0

    25n2-10n-8=0

    m<n

    Incorrect Answer

    m<=n

    Incorrect Answer

    m>n

    Correct Answer

    m>=n

    Incorrect Answer
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    Explanation:

    10m2-136m-14=0
    10m2 -140m+m-14=0
    10m(m -14) + 1(m -14)=0
    (m-14) ( 10m+1)=0
    m= +14 , -1/10
    25n2-10n-8=0
    25n2 -20n+ 10n -8=0
    5n( 5n-4) + 2(5n-4)=0
    (5n-4) ( 5n+2)=0
    n= 5/4, -2/5
    Hence m>n

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