An algebra problem by Ραμών Αδάλια

Algebra Level 4

∑ n = 1 9 [ 5 n ( n − 1 ) ( n 2 − n + 1 ) + 1 ] = ? \large \sum_{n=1}^9 [5n(n-1)(n^2-n+1)+1] = \, ?


The answer is 59049.

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Ραμών Αδάλια by Ραμών Αδάλια , 22, Spain

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