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If the quadratic equation formed by elim...

If the quadratic equation formed by eliminating x from `x^(2)+alphax+beta=0andxy+l(x+y)+m=0` has the same roots as that of the given quadratic equation, then the set of values of `beta` is

A

`{m,alphal-m}`

B

`{m,l+m}`

C

`{m,alphal+m}`

D

`{m,l-m}`

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A
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