Answer
a. 2847
b. 8105409
c. 1158777
Work Step by Step
$a. 387+414+404+396+410+422+414= 2847$
$b. (2847)^{2} = 8105409$
$c. (387^2)+(414^2)+(404^2)+(396^2)+(410^2)+(422^2)+(414^2) = 1158777$
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