1.

Add: a2 + ba - bc + c2 + 2cb-5ca + b2 + ac - 2ab​

Answer»

ANSWER:

a2 + ba - BC + c2 + 2cb - 5ca + B2 + ac - 2AB

= a2 + b2 + c2 - 2ab + ba + 2cb - bc - 5ca + ac

= a2 + b2 + c2 - ab + bc - 4ac

Hope this answer will help you



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