Answer
Both series are the same
$\sum\limits_{i=1}^7 (i + i^2) = \sum\limits_{i=1}^7 i + \sum\limits_{i=1}^7 i^2$
Work Step by Step
As $\sum\limits_{i=1}^7 (i + i^2) = 168$ (from Q59.a)
and $\sum\limits_{i=1}^7 i + \sum\limits_{i=1}^7 i^2 = 168$ (from Q59.b)
$\sum\limits_{i=1}^7 (i + i^2) = \sum\limits_{i=1}^7 i + \sum\limits_{i=1}^7 i^2$
Hence, both series are the same
