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The equation e^(4x)+8e^(3x)+13e^(2x)-8e^...

The equation `e^(4x)+8e^(3x)+13e^(2x)-8e^(x)+1=0,x in R` has

A

four solutions two of which are negative

B

two solutions and both are negative

C

no solution

D

two solutions and only one of them is negative

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The correct Answer is:
B
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