Images C2 4BC 4B2

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C2 4bc 4b2. A2 b2 c2 2bc. A2+b2+c2-2ab-2bc+2ac. A2+2ab+c2. Ab+2b+AC+2c.
A2 b2 c2 2bc. A2+b2+c2-2ab-2bc+2ac. A2+2ab+c2. Ab+2b+AC+2c.

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