Question

prove that

2a2 + 2b2 + 2c2 - 2ab - 2bc - 2ca = (a-b)2 +(b-c)2 + (c - a)2
​

Answer 1

Explanation:

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Answer 2

Answer:

12

Explanation:

use phythagoras theorem

hypoteneuse^2 = perpendicular^2 + base^2