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OpenStudy (anonymous):
when does (x+y)^n=x^n+y^n ??
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OpenStudy (anonymous):
when x=0 OR y=0 or n=1
OpenStudy (anonymous):
or when @joemath314159 expands
OpenStudy (anonymous):
There are some more interesting cases. For example, when n is odd, x = -1 and y = 1 will be a solution.
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