यदि x = sqrt ( 8 + sqrt ( 8 + sqrt ( 8.....

यदि `x = sqrt ( 8 + sqrt ( 8 + sqrt ( 8...)))` तथा `y = sqrt (8 - sqrt ( 8- sqrt ( 8...)))`है, तब

A

`x + y = 1 `

B

`x + y+ 1 =0`

C

`x - y = 1`

D

`x - y + 1 =0`

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The correct Answer is:

C

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