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If the equation 2^(2x) + a. 2^(x+1)+a+1=...

If the equation `2^(2x) + a. 2^(x+1)+a+1=0` has roots of opposite sign, then the exhaustive set of real values of a is

A

`(-oo, 0)`

B

`(-1,(-2)/(3))`

C

`(-oo, (-2)/(3))`

D

`(-1, oo)`

Text Solution

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The correct Answer is:
B
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