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Question

If n ∈ N, then x2n1+y2n1 is divisible by


A

x + y

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B

x - y

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C

x2 + y2

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D

x2+xy

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Solution

The correct option is A

x + y


x2n1+y2n1 is always contain equal odd power.

So it is always divisible by x + y.


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