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A real value of x will satisfy the equat...

A real value of x will satisfy the equation `(3- i4x)/(3+i4x)= alpha -I beta (alpha, beta` real) if-

A

`alpha ^(2) -beta ^(2) =-1`

B

`alpha ^(2) -beta ^(2) =1`

C

`alpha ^(2) + beta ^(2) =1`

D

`alpha ^(2) -beta ^(2) =2`

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The correct Answer is:
C
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