Answer
$5525$
Work Step by Step
We know that $\sum_{i=1}^n(i^2)=\frac{n(n+1)(2n+1)}{6}$
Hence $\sum_{k=1}^25(k^2)=\frac{25(25+1)(2(25)+1)}{6}=5525$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 12 Sequences and Series - Chapter Review - Page 840: 8
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