# Find the sum sum_(k=3)^6 (k^2-7)

Find the sum:
$\sum _{k=3}^{6}\left({k}^{2}-7\right)$
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

Hilfeform5c
Solved:
$\sum _{k=3}^{6}\left({k}^{2}-7\right)\phantom{\rule{0ex}{0ex}}⇒\left(3{\right)}^{2}-7+\left(4{\right)}^{2}-7+\left(5{\right)}^{2}-7+\left(6{\right)}^{2}-7\phantom{\rule{0ex}{0ex}}⇒2+9+18+29\phantom{\rule{0ex}{0ex}}⇒58$