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Multiple Choice Questions

Find the value of lambda for which equation lambda sup2 3 lambda 2 x sup2 lambda 2 4 x lambda ...........

Quantitative Aptitude (CDS) Quadratic Equations

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Find the value of λ for which equation (λ²-3λ+2)x²+(λ^2-4)x+(λ^2-5λ+6)=0 becomes an identity.

1

2

3

-2

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Explanation:

For identity a=0 , b=0 , c=0
λ²-3λ+2 = 0 → λ=1 ,2
λ²-4 =0 → λ=2 , -2
λ^2-5λ+6 = 0 → λ = 2, 3
Then λ = 2 is common in all
So, λ= 2

By: bhavesh kumar singh

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