Summation of Squares of Sums of xi and yi for i=1 to 6

Math Problem Statement

Evaluate the sum of the squares of the sums of xi and yi for i from 1 to 6: \u03A3(xi + yi)^2 for i=1 to 6.

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Summation
Algebra
Squares of sums

Summation formula: \u03A3(xi + yi)^2 = (x1 + y1)^2 + (x2 + y2)^2 + ... + (x6 + y6)^2

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