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If x : y = 2:1, then (x^(2) - y^(2)): (x...

If `x : y = 2:1`, then `(x^(2) - y^(2)): (x^(2) + y^(2))` is:

A

`3:5`

B

`5:3`

C

`4:5`

D

`5:6`

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The correct Answer is:
A
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KIRAN PUBLICATION-RATIO AND PROPORTION -TYPE-III
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