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If one of the roots of ax^(2) +ax+a+1=0 ...

If one of the roots of `ax^(2) +ax+a+1=0` is less than 1 and the other is more than 1, then the complete set of values of a is given by

A

`(-(1)/(2), 0)`

B

`(0, (1)/(2))`

C

`(-(1)/(3), 0)`

D

`(0, (1)/(3))`

Text Solution

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The correct Answer is:
C
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