Find polynomial f(n) such that for all integers n we have
1^5 + 2^5 + 3^5 + ... + n^5 = f(n) Write f(n) as a polynomial with terms in descending order of n
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https://www.wolframalpha.com/input/?i=1%5E5+%2B+2%5E5+%2B+3%5E5+%2B+...+%2B+n%5E5+%3D+f%28n%29%2C+write+f%28n%29+as+descending+polynomial