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If the two roots (a-1)(x^4+x^2+1)+(a+1)(...

If the two roots `(a-1)(x^4+x^2+1)+(a+1)(x^2+x+1)^2`=0 are real and distinct, then the set of all values of 'a' is........

A

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

B

`(- infty, - 2) cup (2, infty)`

C

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

D

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

Text Solution

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The correct Answer is:
C
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