Show that if [itex]a,b\in\mathbb{N}^+,\ \gcd(a,b) = 1[/itex] and [itex]p[/itex] is an odd prime,(adsbygoogle = window.adsbygoogle || []).push({});

then [itex]\gcd\left(a+b,\frac{a^p+b^p}{a+b}\right)\in \{1,p\}[/itex]

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# Show co-prime

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