Multiple Choice Questions on Find the value of mu for which equation mu sup2 1 x sup2 mu 2 3 mu 2 x mu 2 2 mu 3 0 becomes an........... for CDS Exam Preparation

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Multiple Choice Questions

Find the value of mu for which equation mu sup2 1 x sup2 mu 2 3 mu 2 x mu 2 2 mu 3 0 becomes an...........

Quantitative Aptitude (CDS) Quadratic Equations
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    Find the value of μ for which equation  (μ²-1)x²+(μ^2+3μ+2)x+(μ^2-2μ-3)=0 becomes an identity.

    1

    Incorrect Answer

    2

    Incorrect Answer

    -2

    Incorrect Answer

    -1

    Correct Answer
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    Explanation:

    For identity a=0 , b=0 , c=0 
    μ ²-1 = 0  → μ=1 ,-1
    μ ²+3μ+2 =0   → μ =-1, -2
     μ^2-2μ-3 = 0   → μ = -1, 3
    Then μ =-1  is common in all 
    So, μ = -1

    By: bhavesh kumar singh
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