- #1
phymatter
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What is the expansion of x^{n} +y^{n} , when is even ??/
I don't see anything that can be expanded.
What is the expansion of x^{n} +y^{n} , when is even ??/
i mean that x^{n} - y^{n} can be written as (x-y)(x^{n-1} +x^{n-2}y ....+y^{n-1} )
similarly what can x^{n} +y^{n} be written as ????????