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If a^(2) + b^(2) + 2b + 4a + 5 = 0 , the...

If `a^(2) + b^(2) + 2b + 4a + 5 = 0` , then the value of `(a - b)/( a + b)` is

A

`(3)/(7)`

B

`(2)/(7)`

C

`(1)/(7)`

D

`(2)/(5)`

Text Solution

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The correct Answer is:
C
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