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If both the roots of the equation x^(2)-...

If both the roots of the equation `x^(2)-4ax+1-3a+4a^(2)=0` exceed 1, then a lies in the interval

A

`(-oo, (7-sqrt(17))/8)`

B

`((7+sqrt(17))/8, oo)`

C

`((7-sqrt(17))/8, 1/2)`

D

`(1/2, (7+sqrt(17))/8)`

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The correct Answer is:
B
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