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If x - y = ( x + y)/(7) = (xy)/(4) the ...

If ` x - y = ( x + y)/(7) = (xy)/(4)` the numerical value of xy is

A

`(4)/(3)`

B

`(3)/(4)`

C

`(1)/(4)`

D

`(1)/(3)`

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The correct Answer is:
A
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LUCENT PUBLICATION-ALGEBRAIC IDENTITIES -Exercise - 1A
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