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If 2 lies between the roots 'of x^(2)+(a...

If 2 lies between the roots 'of `x^(2)+(a+1) x-a-2=0` then a in

A

`(-4)`

B

`(4, oo)`

C

`(-4,4) oo`

D

`(-oo,-4)^(prime)`

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The correct Answer is:
D
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